Health care, or healthcare, refers to the treatment and management of illness, and the preservation of health through services.....

Health care, or healthcare, refers to the treatment and management of illness, and the preservation of health through services offered by the medical, pharmaceutical, dental, clinical laboratory sciences (in vitro diagnostics), nursing, and allied health professions. Health care embraces all the goods and services designed to promote health, including “preventive, curative and palliative interventions, whether directed to individuals or to populations”.
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Before the term health care became popular, English-speakers referred to medicine or to the health sector and spoke of the treatment and prevention of illness and disease.
When considering the history of Universal Health Care and the giants of Canadian politics, T.C. Douglas surely stands at the forefront. Tommy Douglas was a remarkable Canadian whose contributions have helped to shape the great nation. Although he is most famous as the founding father of Medicare, the most advanced health-care system in the world, Douglas’ contributions to Saskatchewan and Canada were tremendous.

Tommy Clement Douglas was born on October 20, 1904 in Falkirk, Scotland. In 1911, Tommy, his mother and his sister moved to Winnipeg to join his father who had moved there the previous year. Shortly after settling in Winnipeg, Tommy was diagnosed with osteoarthritis in his right leg. Tommy’s family was not wealthy and subsequently his family could not pay for the best or most immediate treatment. The delay nearly cost Tommy his leg. This experience marked the beginning of Tommy’s quest for universal, public health care.

In 1961, In Saskatchewan, Canada, The North American Medical Establishment tried to defy Medicare, Douglas’s top priority project, and Saskatchewan politics became an intense battleground. This turbulent time was marked by the Doctor’s Strike as the physicians of the province protested socialized healthcare. However, the striking doctors were no match for Douglas. When the dust settled with the resolution of the strike, Medicare in Saskatchewan was born. Douglas showed Canada two things: that it was possible to develop and finance a universal Medicare system and that the medical profession could be confronted. Had Douglas not have made these first ground breaking steps, national Medicare would never have happened. This movement and political struggle helped pave the way for universal health care on a global scale. Since then, Canada's system of health care has been imitated and implemented in various countries around the world.

Health care can encompass a wide number of settings - from the informal (house calls, emergency medicine at an accident spot) to settings like.......

Health care can encompass a wide number of settings - from the informal (house calls, emergency medicine at an accident spot) to settings like nursing homes or rest homes, to 'typical' medical settings like doctor's practices, clinics and hospitals.

A health care provider or health professional is an organization or person who delivers proper health care in a systematic way professionally to any individual in need of health care services. A health care provider could be government, the health care industry, a health care equipment company, an institution such as a hospital or medical laboratory, physicians, dentists, support staff, nurses, therapists, psychologists, pharmacists, chiropractors, and optometrists.
Emergency medicine is a speciality of medicine that focuses on the diagnosis and treatment of acute illnesses and injuries that require immediate medical attention. While not usually providing long-term or continuing care, emergency medicine physicians diagnose a wide array of pathology and undertake acute interventions to stabilize the patient. These professionals practice in hospital emergency departments, in the prehospital setting via emergency medical service and other locations where initial medical treatment of illness takes place. Just as clinicians operate by immediacy rules under large emergency systems, emergency practioniers aim to diagnose emergent conditions and stabilize the patient for definitive care.
Chronic care management encompasses the oversight and education activities conducted by professionals to help patients with chronic diseases such as diabetes, high blood pressure, lupus, multiple sclerosis and sleep apnea learn to understand their condition and live successfully with it. This term is equivalent to disease management (health) for chronic conditions. The work involves motivating patients to persist in necessary therapies and interventions and helping them to achieve an ongoing, reasonable quality of life.
Patient safety is a new healthcare discipline that emphasizes the reporting, analysis, and prevention of medical error that often lead to adverse healthcare events. The frequency and magnitude of avoidable adverse patient events was not well known until the 1990s, when multiple countries reported staggering numbers of patients harmed and killed by medical errors. Recognizing that healthcare errors impact 1 in every 10 patients around the world, the World Health Organization calls patient safety an endemic concern. Indeed, patient safety has emerged as a distinct healthcare discipline supported by an immature yet developing scientific framework. There is a significant transdisciplinary body of theoretical and research literature that informs the science of patient safety. The resulting patient safety knowledge continually informs improvement efforts such as: applying lessons learned from business and industry, adopting innovative technologies, educating providers and consumers, enhancing error reporting systems, and developing new economic incentives. This patient safety page provides an evidence-based and peer-reviewed forum to learn about contemporary error and adverse event knowledge.

Traditional Chinese medicine

Traditional Chinese medicine (also known as TCM, simplified Chinese: 中医; traditional Chinese: 中醫; pinyin: zhōngyī) includes a range of traditional medical practices originating in China. Although well accepted in the mainstream of medical care throughout East Asia, it is considered an alternative medical system in much of the western world.

TCM practices include such treatments as herbal medicine, acupuncture, dietary therapy, and both Tui na and Shiatsu massage. Qigong and Taijiquan are also closely associated with TCM.

TCM theory originated thousands of years ago through meticulous observation of nature, the cosmos, and the human body. Major theories include those of Yin-yang, the Five Phases, the human body Channel system, Zang Fu organ theory, six confirmations, four layers, etc.

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Timeline of Chinese medicine

The history of TCM can be summarized by a list of important doctors and books.

Unknown, Huángdì nèijīng (黃帝內經/黄帝内经) (Yellow Emperor's Inner Canon) - Sùwèn (素问/素問) and Língshū (灵枢/靈樞). The earliest classic of TCM passed on to the present.
Warring States Period (5th century BC to 221 BC): Silk manuscripts recording channels and collaterals, Zubi shiyi mai jiu jing (足臂十一脉灸经/足臂十一脈灸經) (Moxibustion Classic of the Eleven Channels of Legs and Arms), and Yinyang shiyi mai jiu jing (阴阳十一脉灸经/陰陽十一脈灸經) (Moxibustion Classic on the Eleven Yin and Yang Channels). The latter was part of a cache of texts found in Mawangdui in the 1970s.
Han Dynasty (206 BC–AD 220) to Three Kingdoms Period (220 - 280 AD):
Zhenjiu zhenzhong jing (针灸枕中经/鍼灸枕中經) (Classic of Moxibustion and Acupuncture Preserved in a Pillow) by Huà Tuó (华佗/華佗).
Shanghan zabing lun (伤寒杂病论/傷寒雜病論), which has since been split into two texts: the Shānghán lùn (伤寒论/傷寒論) ("Treatise on Cold Damage [Disorders]" - focusing on febrile conditions attributed to "Cold") and the Jingui yaolue (金匱要略) ("Essentials of the Golden Cabinet" - focusing on "miscellaneous illnesses") by Zhāng Zhòngjǐng (张仲景/張仲景).
Jìn Dynasty (265-420): Zhēnjiǔ jiǎyǐ jīng (针灸甲乙经/鍼灸甲乙經) (Systematic Classic of Acupuncture and Moxibustion) by Huángfǔ Mì (皇甫谧/皇甫謐).
Tang Dynasty (618–907)
Beiji qianjin yaofang (备急千金要方/備急千金要方) (Emergency Formulas Worth a Thousand in Gold) and Qianjin yifang (千金翼方) (Supplement to the Formulas Worth a Thousand in Gold) by Sūn Sīmiǎo (孙思邈/孫思邈).
Waitai miyao (外台秘要/外臺秘要) (Arcane Essentials from the Imperial Library) by Wang Tao (王焘/王燾).
Song Dynasty (960 – 1279):
Tóngrén shūxué zhēnjiǔ tújīng (铜人腧穴针灸图经/銅人腧穴鍼灸圖經) (Illustrated Manual of the Practice of Acupuncture and Moxibustion at (the Transmission) (and other) Acu-points, for use with the Bronze Figure) by Wáng Wéiyī (王惟一).
Yuan Dynasty (1271 to 1368): Shísì jīng fāhuī (十四经发挥/十四經發揮) (Exposition of the Fourteen Channels) by Huá Shòu (滑寿/滑壽).
Ming Dynasty (1368 to 1644): golden age of acupuncture and moxibustion. Many famous doctors and books. To name only a few:
Zhēnjiǔ dàquan (针灸大全/鍼灸大全) (A Complete Collection of Acupuncture and Moxibustion) by Xu Feng (徐凤/徐鳳).
Zhēnjiǔ jùyīng fāhuī (针灸聚英发挥/鍼灸聚英發揮) (An Exemplary Collection of Acupuncture and Moxibustion and their Essentials) by Gāo Wǔ (高武).
Zhēnjiǔ dàchéng (针灸大成/鍼灸大成) (Compendium of Acupuncture and Moxibustion) by Yáng Jìzhōu (杨继洲/楊繼洲), completed in 1601.
Běncǎo gāngmù (本草冈目/本草綱目) (Compendium of Materia Medica) by Lǐ Shízhēn (李时珍/李時珍), the most complete and comprehensive pre-modern herbal book (completed in 1578).
Wenyi lun (温疫论/溫疫論), by Wu Youxing 吴有性 (1642).
Qing Dynasty (1644-1912):
Yizong jinjian (医宗金鉴/醫宗金鑒) (Golden Mirror of the Medical Tradition) compiled by Wu Quan (吴谦/吴謙) under imperial commission.
Zhenjiu fengyuan (针灸逢源/鍼灸逢源) (The Source of Acupuncture and Moxibustion) by Li Xuechuan (李学川/李學川).
Wenre lun (温热论/溫熱論), by Ye Tianshi (叶天士/業天士).
Wenbing tiaobian (温病条辨/溫病條辨) (Systematized Identification of Warm-factor disorders) compiled by Wu Jutong (吴鞠通) in 1798.

Ancient (classical) TCM history

Much of the philosophy of traditional Chinese medicine derives from the same philosophy that inform Taoist and Buddhist thought, and reflects the classical Chinese belief that the life and activity of individual human beings have an intimate relationship with the environment on all levels.

In legend, as a result of a dialogue with his minister Qibo (岐伯), the Yellow Emperor (2698 - 2596 BCE) is supposed by Chinese tradition to have composed his Neijing Suwen (《内经·素问》) or Inner Canon: Basic Questions, also known as the Huangdi Neijing (Yellow Emperor's Inner Canon). The book's title is often mistranslated as Yellow Emperor's Classic of Internal Medicine. Modern scholarly opinion holds that the extant text of this title was compiled by an anonymous scholar no earlier than the Han dynasty just over two-thousand years ago.

During the Han Dynasty (202 BC –220 AD), Zhang Zhongjing (张仲景/張仲景), the Hippocrates of China, who was mayor of Chang-sha toward the end of the 2nd century AD, wrote a Treatise on Cold Damage, which contains the earliest known reference to Neijing Suwen. Another prominent Eastern Han physician was Hua Tuo (c. 140 – c. 208 AD), who anesthetized patients during surgery with a formula of wine and powdered hemp. Hua's physical, surgical, and herbal treatments were also used to cure headaches, dizziness, internal worms, fevers, coughing, blocked throat, and even a diagnosis for one lady that she had a dead fetus within her that needed to be taken out. The Jin dynasty practitioner and advocate of acupuncture and moxibustion, Huang-fu Mi (215 - 282 AD), also quoted the Yellow Emperor in his Jia Yi Jing (甲乙经/甲乙經), ca. 265 AD. During the Tang dynasty, Wang Bing claimed to have located a copy of the originals of the Neijing Suwen, which he expanded and edited substantially. This work was revisited by an imperial commission during the 11th century AD.

There were noted advances in Chinese medicine during the Middle Ages. Emperor Gaozong (r. 649–683) of the Tang Dynasty (618–907) commissioned the scholarly compilation of a materia medica in 657 that documented 833 medicinal substances taken from stones, minerals, metals, plants, herbs, animals, vegetables, fruits, and cereal crops.[2] In his Bencao Tujing ('Illustrated Pharmacopoeia'), the scholar-official Su Song (1020–1101) not only systematically categorized herbs and minerals according to their pharmaceutical uses, but he also took an interest in zoology. For example, Su made systematic descriptions of animal species and the environmental regions they could be found, such as the freshwater crab Eriocher sinensis found in the Huai River running through Anhui, in waterways near the capital city, as well as reservoirs and marshes of Hebei.

Contact with Western culture and medicine has not displaced TCM. While there may be traditional factors involved in the persistent practice, two reasons are most obvious in the westward spread of TCM in recent decades. Firstly, TCM practices are believed by many to be very effective, sometimes offering palliative efficacy where the practices of Western medicine fail or unable to provide treatment, especially for routine ailments such as flu and allergies, or when Western medicine fails to relieve patients suffering from chronic ailments. TCM has been shown to be effective[citation needed] in the treatment of chronic, functional disorders, such as migraines and osteoarthritis, and is traditionally used for a wide range of functional disorders. Secondly, TCM provides an alternative to otherwise costly procedures whom many can not afford, or which is not covered by insurance. There are also many who turn to TCM to avoid the toxic side effects of pharmaceuticals.

TCM of the last few centuries is seen by at least some sinologists as part of the evolution of a culture, from shamans blaming illnesses on evil spirits to "proto-scientific" systems of correspondence;[8] any reference to supernatural forces is usually the result of romantic translations or poor understanding and will not be found in the Taoist-inspired classics of acupuncture such as the Huang Di Nei Jing. The system's development has, over its history, been analysed both skeptically and extensively, and the practice and development of it has waxed and waned over the centuries and cultures through which it has travelled[9] - yet the system has still survived thus far. It is true that the focus from the beginning has been on pragmatism, not necessarily understanding of the mechanisms of the actions - and that this has hindered its modern acceptance in the West. This, despite that there were times such as the early 18th century when "acupuncture and moxa were a matter of course in polite European society"

The term "TCM" describes the modern practice of Chinese medicine as a result of sweeping reforms that took place after 1950 in the People's Republic of China. The term "Classical Chinese medicine" (CCM) often refers to medical practices that rely on theories and methods dating from before the fall of the Qing Dynasty (1911). Advocates of CCM portray it as less influenced by Western and political agendas than TCM.

Birth control

Birth control, sometimes synonymous with contraception, is a regimen of one or more actions, devices, or medications followed in order to deliberately prevent or reduce the likelihood of pregnancy or childbirth. "Contraception" may refer specifically to mechanisms that are intended to reduce the likelihood of a sperm cell fertilizing the egg. Birth control is commonly used as part of family planning.

The history of birth control began with the discovery of the connection between coitus and pregnancy. The oldest forms of birth control included coitus interruptus, pessaries, and the ingestion of herbs that were believed to be contraceptive or abortifacient. The earliest record of birth control use is an ancient Egyptian set of instructions on creating a contraceptive pessary.

Different methods of birth control have varying characteristics. Condoms, for example, are the only methods that provide significant protection from sexually transmitted diseases. Cultural and religious attitudes on birth control vary significantly.
Probably the oldest methods of contraception (aside from avoiding vaginal intercourse) are coitus interruptus, lactational, certain barrier methods, and herbal methods (emmenagogues and abortifacients).

Coitus interruptus (withdrawal of the penis from the vagina prior to ejaculation) probably predates any other form of birth control. Once the relationship between the emission of semen into the vagina and pregnancy was known or suspected, some men began to use this technique. This is not a particularly reliable method of contraception, as few men have the self-control to correctly practice the method at every single act of sexual intercourse.[1] Although it is commonly believed that pre-ejaculate fluid can cause pregnancy, modern research has shown that pre-ejaculate fluid does not contain viable sperm.

There are historic records of Egyptian women using a pessary (a vaginal suppository) made of various acidic substances and lubricated with honey or oil, which may have been somewhat effective at killing sperm. However, it is important to note that the sperm cell was not discovered until Anton van Leeuwenhoek invented the microscope in the late 17th century, so barrier methods employed prior to that time could not know of the details of conception. Asian women may have used oiled paper as a cervical cap, and Europeans may have used beeswax for this purpose. The condom appeared sometime in the 17th century, initially made of a length of animal intestine. It was not particularly popular, nor as effective as modern latex condoms, but was employed both as a means of contraception and in the hopes of avoiding syphilis, which was greatly feared and devastating prior to the discovery of antibiotic drugs.

Various abortifacients have been used throughout human history in attempts to terminate undesired pregnancy. Some of them were effective, some were not; those that were most effective also had major side effects. One abortifacient reported to have low levels of side effects—silphium—was harvested to extinction around the 1st century.[5] The ingestion of certain poisons by the female can disrupt the reproductive system; women have drunk solutions containing mercury, arsenic, or other toxic substances for this purpose. The Greek gynaecologist Soranus in the 2nd century suggested that women drink water that blacksmiths had used to cool metal. The herbs tansy and pennyroyal are well-known in folklore as abortive agents, but these also "work" by poisoning the woman. Levels of the active chemicals in these herbs that will induce a miscarriage are high enough to perilously damage the liver, kidneys, and other organs. However, in those times where risk of maternal death from postpartum complications was high, the risks and side effects of toxic medicines may have seemed less onerous. Some herbalists claim that black cohosh tea will also be effective in certain cases as an abortifacient.

Aside from abortifacients, herbal contraceptives in folklore have also included a few preventative measures. Hibiscus rosa-sinensis, known in Ayurveda as a contraceptive, may have antiestrogenic properties. Papaya seeds, rumored to be a male contraceptive, have recently been studied for their azoospermic effect on monkeys.

During the medieval period, physicians in the Islamic world listed many birth control substances in their medical encyclopedias. Avicenna listing 20 in The Canon of Medicine (1025) and Muhammad ibn Zakariya ar-Razi listing 176 in his Hawi (10th century). This was unparalleled in European medicine until the 19th century.

The fact that various effective methods of birth control were known in the ancient world sharply contrasts with a seeming ignorance of these methods in wide segments of the population of early modern Christian Europe. This ignorance continued far into the 20th century, and was paralleled by eminently high birth rates in European countries during the 18th and 19th centuries. Some historians have attributed this to a series of coercive measures enacted by the emerging modern state, in an effort to repopulate Europe after the population catastrophe of the Black Death, starting in 1348. According to this view, the witch hunts were the first measure the modern state took in an attempt to eliminate knowledge about birth control within the population, and monopolize it in the hands of state-employed male medical specialists (gynecologists). Prior to the witch hunts, male specialists were unheard of, because birth control was naturally a female domain.

Presenters at a family planning conference told a tale of Arab traders inserting small stones into the uteruses of their camels in order to prevent pregnancy, a concept very similar to the modern IUD. Although the story has been repeated as truth, it has no basis in history and was meant only for entertainment purposes. The first interuterine devices (which occupied both the vagina and the uterus) were first marketed around 1900. The first modern intrauterine device (contained entirely in the uterus) was described in a German publication in 1909. The Gräfenberg ring, the first IUD that was used by a significant number of women, was introduced in 1928.

The rhythm method (with a rather high method failure rate of ten percent per year)[citation needed] was developed in the early 20th century, as researchers discovered that a woman only ovulates once per menstrual cycle. Not until the 1950s, when scientists better understood the functioning of the menstrual cycle and the hormones that controlled it, were methods of hormonal contraception and modern methods of fertility awareness (also called natural family planning) developed.

Margaret Sanger was an American birth control activist and the founder of the American Birth Control League (which eventually became Planned Parenthood). She was instrumental in opening the way to access birth control.

In 1960 the FDA approved the first form of hormonal birth control, the combined oral contraceptive pill.

Healthy diet

A healthy diet is one that helps maintain or improve health. It is important for the prevention of many chronic disease such as: obesity, heart disease, diabetes, and cancer.


A health diet involves consuming appropriate amounts all of the food groups, including an adequate amount of water. Nutrients can be obtained from many different food, thus a healthy diet may vary widely.
The WHO makes the following 6 recommendation with respect to both populations and individuals:

Achieve an energy balance and a healthy weight
Limit energy intake from total fats and shift fat consumption away from saturated fats to unsaturated fats and towards the elimination of trans-fatty acids
Increase consumption of fruits and vegetables, legumes, whole grains and nuts
Limit the intake of simple sugars
Limit salt / sodium consumption from all sources and ensure that salt is iodized
Other recommendation include:

Sufficient essential amino acids ("complete protein") to provide cellular replenishment and transport proteins. All essential amino acids are present in animals. A select few plants (such as soy and hemp) give all the essential acids. A combination of other plants may also provide all essential amino acids (except rice and beans which have limitations).
Essential micronutrients such as vitamins and certain minerals.
Avoiding directly poisonous (e.g. heavy metals) and carcinogenic (e.g. benzene) substances;
Avoiding foods contaminated by human pathogens (e.g. E. coli, tapeworm eggs).

Fruits and vegetables
The WHO recommends a minimum of 400g of fruit and vegetables per day. This groups excludes potatoes and other starchy tubers.[3] Fruits and vegetables also prevent several micronutrient deficiencies.


Sex
While a moderate amount of sex is required for health, a high amount of sex can have detrimental effects on blood pressure.


Healthy diets

DASH diet
See main article: DASH diet


Unhealthy diets
An unhealthy diet is a major risk factor for a number of chronic diseases including: high blood pressure, diabetes, abnormal blood lipids, overweight/obesity, cardiovascular diseases, and cancer.

The WHO estimates that 2.7 million deaths are attributable to a diet low in fruit and vegetable every year. Globally it is estimated to cause about 19% of gastrointestinal cancer, 31% of ischaemic heart disease, and 11% of strokes. Thus making it one of the leading preventable causes of death worldwide.


Food additive controversy
Some claim that food additives, such as artificial sweeteners, colorants, preserving agents, and flavorings may cause health problems such as increasing the risk of cancer or ADHD.

Several recent studies have also shown that artificial sweeteners, such as Aspartame, may increase risks of obesity. A study led by Sharon P. Fowler found that drinking two cans of either regular or diet soft-drink a day increased the risk of becoming overweight or obese by 50%.

There is a lot of controversy around the use of Aspartame alone, and one test has shown that the Aspartame in Diet Coke "decomposes into formaldehyde, methyl alcohol, formic acid, diketopiperazine and other toxins. In a study on 7 monkeys 5 had grand mal seizures and one died, a casualty rate of 86%." It has also been shown in studies that Diet Coke may cause 92 symptoms listed by the FDA, one of them being Death. However, Aspartame has not been actually "proven" to be dangerous in any way, and the makers of it claim that it is one of the safest artificial sweeteners, and that it has been tested several times by their company.

sexually transmitted disease

A sexually transmitted disease (STD), also known as sexually transmitted infection (STI) or venereal disease (VD), is an illness that has a significant probability of transmission between humans or animals by means of sexual contact, including vaginal intercourse, oral sex, and anal sex. While in the past, these illnesses have mostly been referred to as STDs or VD, in recent years the term sexually transmitted infection (STI) has been preferred, as it has a broader range of meaning; a person may be infected, and may potentially infect others, without showing signs of disease. Some STIs can also be transmitted via use of an IV drug needle after its use by an infected person, as well as through childbirth or breastfeeding. Sexually transmitted infections have been well known for hundreds of years.

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Treatment history

Prior to the invention of modern medicines, sexually transmitted diseases were generally incurable, and treatment was limited to treating the symptoms of the disease. The first voluntary hospital for venereal diseases was founded in 1746 at London Lock Hospital.

The first effective treatment for a sexually transmitted disease was salvarsan, a treatment for syphilis. With the discovery of antibiotics, a large number of sexually transmitted diseases became easily curable, and this, combined with effective public health campaigns against STDs, led to a public perception during the 1960s and 1970s that they have ceased to be a serious medical threat.

During this period, the importance of contact tracing in treating STIs was recognized. By tracing the sexual partners of infected individuals, testing them for infection, treating the infected and tracing their contacts in turn, STI clinics could be very effective at suppressing infections in the general population.

In the 1980s, first genital herpes and then AIDS emerged into the public consciousness as sexually transmitted diseases that could not be cured by modern medicine. AIDS in particular has a long asymptomatic period — during which time HIV (the human immunodeficiency virus, which causes AIDS) can replicate and the disease can be transmitted to others — followed by a symptomatic period, which leads rapidly to death unless treated. Recognition that AIDS threatened a global pandemic led to public information campaigns and the development of treatments that allow AIDS to be managed by suppressing the replication of HIV for as long as possible. Contact tracing continues to be an important measure, even when diseases are incurable, as it helps to contain infection.


Types and their pathogenic causes
Most of the diseases on this list are most commonly transmitted sexually. Some are commonly transmitted in other ways as well; for example, HIV/AIDS is also commonly transmitted through the sharing of infected needles by drug users, while SARS, which can be spread through casual contact such as coughing and sneezing, is very often not associated with sexual activity.

Condoms

Condoms only provide protection when used properly as a barrier, and only to and from the area that it covers. Uncovered areas are still susceptible to many STDs. In the case of HIV, sexual transmission routes almost always involve the penis, as HIV cannot spread through unbroken skin, thus properly shielding the insertive penis with a properly worn condom from the vagina and anus effectively stops HIV transmission. An infected fluid to broken skin borne direct transmission of HIV would not be considered "sexually transmitted", but can still theoretically occur during sexual contact, this can be avoided simply by not engaging in sexual contact when having open bleeding wounds. Other STDs, even viral infections, can be prevented with the use of latex condoms as a barrier. Some microorganisms and viruses are small enough to pass through the pores in natural skin condoms, but are still too large to pass through latex condoms.

Condoms are designed, tested, and manufactured to never fail if used properly. There has not been one documented case of an HIV transmission due to an improperly manufactured condom

Proper usage entails:

Not putting the condom on too tight at the end, and leaving 1.5 cm (3/4 inch) room at the tip for ejaculation. Putting the condom on snug can and often does lead to failure.
Wearing a condom too loose can defeat the barrier.
Avoiding inverting, spilling a condom once worn, whether it has ejaculate in it or not, even for a second.
Avoiding condoms made of substances other than latex or polyurethane, as they don't protect against HIV.
Avoiding the use of oil based lubricants (or anything with oil in it) with latex condoms, as oil can eat holes into them.
Using flavored condoms for oral sex only, as the sugar in the flavoring can lead to yeast infections if used to penetrate.
Not following the first five guidelines above perpetuates the common misconception that condoms aren't tested or designed properly.

In order to best protect oneself and the partner from STIs, the old condom and its contents should be assumed to be still infectious. Therefore the old condom must be properly disposed of. A new condom should be used for each act of intercourse, as multiple usage increases the chance of breakage, defeating the primary purpose as a barrier.

Classification and terminology

Classification and terminology
Until the 1990s, STDs were commonly known as venereal diseases : Veneris is the Latin genitive form of the name Venus, the Roman goddess of love. Social disease was another euphemism.

Public health officials originally introduced the term sexually transmitted infection, which clinicians are increasingly using alongside the term sexually transmitted disease in order to distinguish it from the former. According to the Ethiopian Aids Resource Center FAQ, "Sometimes the terms STI and STD are used interchangeably. This can be confusing and not always accurate, so it helps first to understand the difference between infection and disease. Infection simply means that a germ — virus, bacteria, or parasite — that can cause disease or sickness is present inside a person’s body. An infected person does not necessarily have any symptoms or signs that the virus or bacteria is actually hurting his or her body; they do not necessarily feel sick. A disease means that the infection is actually causing the infected person to feel sick, or to notice something is wrong. For this reason, the term STI — which refers to infection with any germ that can cause an STD, even if the infected person has no symptoms — is a much broader term than STD."[1] The distinction being made, however, is closer to that between a colonization and an infection, rather than between an infection and a disease.

Specifically, the term STD refers only to infections that are causing symptoms. Because most of the time people do not know that they are infected with an STD until they start showing symptoms of disease, most people use the term STD, even though the term STI is also appropriate in many cases.

Moreover, the term sexually transmissible disease is sometimes used since it is less restrictive in consideration of other factors or means of transmission. For instance, meningitis is transmissible by means of sexual contact but is not labeled as an STI because sexual contact is not the primary vector for the pathogens that cause meningitis. This discrepancy is addressed by the probability of infection by means other than sexual contact. In general, an STI is an infection that has a negligible probability of transmission by means other than sexual contact, but has a realistic means of transmission by sexual contact (more sophisticated means — blood transfusion, sharing of hypodermic needles —are not taken into account). Thus, one may presume that, if a person is infected with an STI, e.g., chlamydia, gonorrhea, genital herpes, it was transmitted to him/her by means of sexual contact.