A disease that makes it difficult for the body to fight off infectious diseases.
The human immunodeficiency virus known as HIV causes AIDS by infecting and damaging part of the body's defenses against infection — its lymphocytes, which are a type of white blood cell in the body's immune (infection fighting) system that is supposed to fight off invading germs.
HIV can be transmitted through direct contact with the blood or body fluid of someone who is infected with the virus. That contact usually comes from sharing needles or by having unprotected sex with an infected person. An infant could get HIV from a mother who is infected.
HIV and AIDS can be treated, there are no vaccines or cures for them
What HIV Does to the Body
The virus attacks specific lymphocytes called T helper cells (also known as T-cells), takes them over, and multiplies. This destroys more T-cells, which damages the body's ability to fight off invading germs and disease.
When the number of T-cells falls to a very low level, people with HIV become more susceptible to other infections and they may get certain types of cancer that a healthy body would normally be able to fight off. This weakened immunity (or immune deficiency) is known as AIDS and can result in severe life-threatenin infections, some forms of cancer, and the deterioration of the nervous system.
Although AIDS is always the result of an HIV infection, not everyone with HIV has AIDS. In fact, adults who become infected with HIV may appear healthy for years before they get sick with AIDS.
Bacterial vaginosis is the most common cause of vaginal infection. It is less commonly referred to as vaginal bacteriosis. It is not considered to be a sexually transmitted infection.] BV is not transmitted through sexual intercourse but is more common in women who are sexually active BV is caused by an imbalance of naturally occurring bacterial flora and should not be confused with yeast infection (candidiasis), or infection with Trichomonas vaginalis (trichomoniasis), which are not caused by bacteria.
The most common symptom of BV is an abnormal homogeneous off-white vaginal discharge (especially after sex) with an unpleasant smell This malodorous discharge coats the walls of the vagina, and is usually without irritation, pain or erythema.
By contrast, Normal vaginal discharge will vary in consistency and amount throughout the menstrual cycle. A normal discharge is at its clearest about 2 weeks before the period starts.
Because of Chlamydia's unique developmental cycle, it was taxonomically classified in a separate order. Chlamydia is part of the Chlamydiales order, Chlamydiaceae family, along with Chlamydophila genus. As of March 2008, a new chlamydial agent has been proposed to be introduced into the Chlamidiaceae family, namely 'Candidatus Clavochlamydia salmonicola'
·Chlamydia is the most commonly reported STD in the United States.
·Sexually active females 25 years old and younger need testing every year.
·Easy to cure, chlamydia can impact a woman’s ability to have children if left untreated.
Gonorrhea
Gonorrhea (also gonorrhoea, sometimes referred to as 'the clap) is a common sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae (also called Gonococcus, which is often abbreviated as "GC" by clinicians). In the US, its incidence is second only to chlamydia among bacterial STDs. In both men and women if gonorrhea is left untreated, it may spread throughout the body, affecting joints and even heart valves.
Gonorrhea cannot be spread by sharing toilets and bathrooms
A small number of people may be asymptomatic for a lifetime. Between 30% and 60% of people with gonorrhea are asymptomatic or have subclinical disease.
In males, symptoms include a yellowish discharge from the penis, associated with painful, and sometimes frequent, urination. Symptoms can develop from two to thirty days after infection. A few percent of infected men have no symptoms. The infection may move into the prostate, seminal vesicles, and epididymis, causing pain and fever. Untreated, gonorrhea can lead to sterility. It is not unusual for men to have asymptomatic gonorrhea. Men may complain of pain on urinating and thick, copious, urethral pus discharge (also known as gleet) is the most common presentation. Examination may show a reddened external urethral meatus. Ascending infection may involve the epididymis, testicles, or prostate gland, causing symptoms such as scrotal pain or swelling.
More than half of women with gonorrhea show no symptoms, or symptoms mild enough to be ignored. Women may complain of vaginal discharge, difficulty urinating (dysuria), projectile urination, off-cycle menstrual bleeding, or bleeding after sexual intercourse. The cervix may appear anywhere from normal to the extreme of marked cervical inflammation with pus. Early symptoms may include a discharge from the vagina, discomfort in the lower abdomen, irritation of the genitals, pain or burning during urination and abnormal bleeding. Less advanced symptoms, which may indicate development of pelvic inflammatory disease, include cramps and pain, bleeding between menstrual periods, vomiting, or fever. Women who leave these symptoms untreated may develop severe complications. The infection will usually spread to the uterus, fallopian tubes, and ovaries, causing Pelvic Inflammatory Disease.
Possibility of increased production of male hormones is common. Infection of the urethra (urethritis) causes little dysuria or pus. The combination of urethritis and cervicitis on examination strongly supports a gonorrhea diagnosis, as both sites are infected in most gonorrhea patients. Gonorrhea infection can also be present as septic arthritis. Instances of blurred vision in one eye may occur in adults.
Following the classification HSV into two distinct categories of HSV-1 and HSV-2 in the 1960s, it was established that "HSV-2 was below the waist, HSV-1 was above the waist". Although genital herpes is largely believed to be caused by HSV-2, genital HSV-1 infections are increasing and now exceed 50% in certain populations,and that rule of thumb no longer applies. HSV is believed to be asymptomatic in the majority of cases, thus aiding contagion and hindering containment.
When symptomatic, the typical manifestation of a primary HSV-1 or HSV-2 genital infection is clusters of genital sores consisting of inflamed papules and vesicles on the outer surface of the genitals resembling cold sores. These usually appear 4–7 days after sexual exposure to HSV for the first time. Genital HSV-1 infection recurs at rate of about one sixth of that of genital HSV-2. In males, the lesions occur on the glans penis, shaft of the penis or other parts of the genital region, on the inner thigh, buttocks, or anus. In females, lesions appear on or near the pubis, labia, clitoris, vulva, buttocks or anusAfter 2–3 weeks, existing lesions progress into ulcers and then crust and heal, although lesions on mucosal surfaces may never form crusts. In rare cases, involvement of the sacral region of the spinal cord can cause acute urinary retention and one-sided symptoms and signs of myeloradiculitis (a combinatio of myelitis and radiculitis): pain, sensory loss, abnormal sensations (paresthesia) and rash. Historically this has been termed Elsberg syndrome, although this entity is not clearly defined.
·You can get genital herpes even if your partner shows no signs of the infection.
·If you have any symptoms (like a sore on your genitals, especially one that periodically recurs) laboratory tests can help determine if you have genital herpes.
·There is no cure for herpes, but treatment is available to reduce symptoms and decrease the risk of transmission to a partner.
Medical research has not been able to find a way to halt the spread of herpes and the number of infected people keeps growing. In the United States alone, 45 million people are infected, with an additional one million new infections occurring every year.
Genital herpes cannot be cured. Moreover, genital herpes can be transmitted by viral shedding prior to and following the visual signs of symptoms. There are however some drugs that can shorten outbreaks and make them less severe or even stop them from happening. Among these drugs one can find are: acyclovir, valacyclovir and famciclovir.
AIDS Acquired immune deficiency syndrome or acquired immunodeficiency syndrome (AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV).This condition progressively reduces the effectiveness of the immune system and leaves individuals susceptible to opportunistic infections and tumors. HIV is transmitted through direct contact of a mucous membrane or the bloodstream with a bodily fluid containing HIV, such as blood, semen, vaginal fluid, preseminal fluid, and breast milk.This transmission can involve anal, vaginal or oralsex, blood transfusion, contaminated hypodermic needles, exchange between mother and baby during pregnancy, childbirth, breastfeeding or other exposure to one of the above bodily fluids. AIDS is now a pandemic.In 2007, it was estimated that 33.2 million people lived with the disease worldwide, and that AIDS killed an estimated 2.1 million people, including 330,000 children Over three-quarters of these deaths occurred in sub-Saharan Africa Genetic research indicates that HIV originated in west-central Africa during the late nineteenth or early twentieth century.
Although treatments for AIDS and HIV can slow the course of the disease, there is no known cure or vaccine. Antiretroviral treatment reduces both the mortality and the morbidity of HIV infection, but these drugs are expensive and routine access to antiretroviral medication is not available in all countries. Due to the difficulty in treating HIV infection, preventing infection is a key aim in controlling the AIDS pandemic, with health organizations promoting safe sex and needle-exchange programmes in attempts to slow the spread of the virus.
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.
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.
Prevention is key in addressing incurable STIs, such as HIV & herpes.
The most effective way to prevent sexual transmission of STIs is to avoid contact of body parts or fluids which can lead to transfer with an infected partner. No contact minimizes risk. Not all sexual activities involve contact: cybersex, phonesex or masturbation from a distance are methods of avoiding contact. Proper use of condoms reduces contact and risk. Although a condom is effective in limiting exposure, some disease transmission may occur even with a condom.[10]
Ideally, both partners should get tested for STIs before initiating sexual contact, or before resuming contact if a partner engaged in contact with someone else. Many infections are not detectable immediately after exposure, so enough time must be allowed between possible exposures and testing for the tests to be accurate. Certain STIs, particularly certain persistent viruses like HPV, may be impossible to detect with current medical procedures.
Many diseases that establish permanent infections can so occupy the immune system that other diseases become more easily transmitted. The innate immune system led by defensinsagainst HIV can prevent transmission of HIV when viral counts are very low, but if busy with other viruses or overwhelmed, HIV can establish itself. Certain viral STI's also greatly increase the risk of death for HIV infected patients.
Vaccines
Vaccines are available that protect against some viral STIs, such as Hepatitis B and some types of HPV. Vaccination before initiation of sexual contact is advised to assure maximal protection.
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.
Many STDs are (more easily) transmitted through the mucous membranes of the penis, vulva, rectum, urinary tract and (less often—depending on type of infection) the mouth, throat, respiratory tract and eyes. The visible membrane covering the head of the penis is a mucous membrane, though it produces no mucus (similar to the lips of the mouth). Mucous membranes differ from skin in that they allow certain pathogens into the body.Pathogens are also able to pass through breaks or abrasions of the skin, even minute ones. The shaft of the penis is particularly susceptible due to the friction caused during penetrative sex. The primary sources of infection in ascending order are venereal fluids, saliva, mucosal or skin (particularly the penis), infections may also be transmitted from feces, urine and sweat. The amount required to cause infection varies with each pathogen but is always less than you can see with the naked eye.
This is one reason that the probability of transmitting many infections is far higher from sex than by more casual means of transmission, such as non-sexual contact—touching, hugging, shaking hands—but it is not the only reason. Although mucous membranes exist in the mouth as in the genitals, many STIs seem to be easier to transmit through oral sex than through deep kissing. According to a safe sex chart, many infections that are easily transmitted from the mouth to the genitals or from the genitals to the mouth, are much harder to transmit from one mouth to another. With HIV, genital fluids happen to contain much more of the pathogen than saliva. Some infections labeled as STIs can be transmitted by direct skin contact.Herpes simplex and HPV are both examples. KSHV, on the other hand, may be transmitted by deep-kissing but also when saliva is used as a sexual lubricant.
Depending on the STD, a person may still be able to spread the infection if no signs of disease are present. For example, a person is much more likely to spread herpes infection when blisters are present (STD) than when they are absent (STI). However, a person can spread HIV infection (STI) at any time, even if he/she has not developed symptoms of AIDS (STD).
Allsexual behaviors that involve contact with the bodily fluids of another person should be considered to contain some risk of transmission of sexually transmitted diseases. Most attention has focused on controlling HIV, which causes AIDS, but each STD presents a different situation.
As may be noted from the name, sexually transmitted diseases are transmitted from one person to another by certain sexual activities rather than being actually caused by those sexual activities. Bacteria, fungi, protozoa or viruses are still the causative agents. It is not possible to catch any sexually transmitted disease from a sexual activity with a person who is not carrying a disease; conversely, a person who has an STD got it from contact (sexual or otherwise) with someone who had it, or his/her bodily fluids. Some STDs such as HIV can be transmitted from mother to child either during pregnancy or breastfeeding.
Although the likelihood of transmitting various diseases by various sexual activities varies a great deal, in general, all sexual activities between two (or more) people should be considered as being a two-way route for the transmission of STDs, i.e., "giving" or "receiving" are both risky although receiving carries a higher risk.
Healthcare professionals suggest safer sex, such as the use of condoms, as the most reliable way of decreasing the risk of contracting sexually transmitted diseases during sexual activity, but safer sex should by no means be considered an absolute safeguard. The transfer of and exposure to bodily fluids, such as blood transfusions and other blood products, sharing injection needles, needle-stick injuries (when medical staff are inadvertently jabbed or pricked with needles during medical procedures), sharing tattoo needles, and childbirth are other avenues of transmission. These different means put certain groups, such as medical workers, and haemophiliacs and drug users, particularly at risk.
Recent epidemiological studies have investigated the networks that are defined by sexual relationships between individuals, and discovered that the properties of sexual networks are crucial to the spread of sexually transmitted diseases. In particular, assortative mixing between people with large numbers of sexual partners seems to be an important factor.
It is possible to be an asymptomatic carrier of sexually transmitted diseases. In particular, sexually transmitted diseases in women often cause the serious condition of pelvic inflammatory disease
