Tuberculosis is an opportunistic infection caused by the bacteria Mycobacterium tuberculosis. The infections occurring in people with weak immunity as compared to the people with a healthy immune system are called as opportunistic infections. As, HIV enters the human body, it replicates and weakens the immune system which in turn increases the risk of contracting Tuberculosis in people already suffering from HIV infection.

An HIV and Tuberculosis co-infection occurs when an individual has both, the HIV infection and an either latent or active TB disease simultaneously.  Each disease acts in speeding up the progress of the other, when HIV and TB infection is present together in the body. HIV infection speeds up the progression from latent to active Tuberculosis, Mycobacterium tuberculosis also accelerates the progression of replication and spread of the HIV infection.

HIV infection and Tuberculosis are totally different type of infectious diseases. HIV is a viral infection and TB is a bacterial one. An HIV infected person will not contract TB unless a contact happens with a TB infected person. TB spreads via droplet infection and is communicable. If a person lives in a country with a high prevalence rate of TB, an HIV patient is highly susceptible to contracting the infection. In the similar manner, a person suffering from TB gets infected with the HIV infection only through the blood and bodily fluids borne route, with unprotected sexual intercourse with an HIV infected individual being the most important cause.

Amongst all the other opportunistic infections, TB occurs at an earlier stage in the course of an HIV infection than most other opportunistic infections. Mortality rate in the co-infected patients is more than twice that of HIV infected individuals without a TB infection. Even if a patient is undergoing anti-retroviral therapy, the death rates remain high in co-infected individuals.The natural history and course of TB gets altered in people with an infected immune system. The damage to immunity due to HIV infection causes a drastic reduction in the pathogen killing capacity of the body. In such patients if there is no anti-retroviral treatment prescribed, then the latency period between the infection and progression of disease gets eliminated. 

An active phase of TB is observed in such individuals progressing within a short span of time, ranging from weeks to months, rather than years as it normally should be spanning. Risk of progression from a latent stage to an active stage of TB is around 10-15 times greater in an HIV infected individual as compared to the non-infected person. Such individuals also communicate the disease more rapidly to others.Pulmonary tuberculosis in an HIV infected person can present similar symptoms like that of a classic TB disease. However, a co-infection can sometimes show less presenting TB symptoms, where even the chest X-ray scans can be observed to be normal. A  subclinical  phase of Tb in co-infected patients can cause delay in the diagnosis of the symptoms and subsequently affect the prognosis due to lack of timely treatment.

Social stigma and discrimination has caused an obstacle in provision of adequate treatment for people with HIV. Proper counseling  and initiatives taken to provide indiscriminate care can aid in identification of co-infection and earlier stages. Anti-retroviral treatment teamed up with anti-tubercular drug regimen is prescribed and a successful treatment for drug sensitive cases of TB can be provided with medications for 6-8 months.

How HIV & TB  Are Related?

People who suffer from human immunodeficiency virus, commonly known as'hiv, are known as hiv positive people. The virus is the agent of aids that is currently incurable. Hiv is known to alter the human immune system and makes people much more susceptible and vulnerable to diseases and infections. 

Body fluids such as semen, blood, breast milk, vaginal fluids etc. Of an infected individual contains the virus, which can be passed from one person to another during blood-to-blood and/or sexual contact. Hiv positive women may even pass on this virus to their children during pregnancy, delivery or by breast feeding them. Hiv is also transmitted during oral, anal or vaginal sex, by contaminated hypodermic needles and by blood transfusion. 

Mentioned below are a few issues that a hiv positive woman have to face apart from discrimination and stigma, fear of infecting their children or partners, violence and abandonment. 

1. Menstrual disorders: changes in menstrual cycles are frequently reported by hiv infected women. However, menstrual dysfunctions are due to varied reasons that aren't directly related to the disease. Although most of the hiv positive women suffer from amenorrhea i. E. The unusual absence of periods, it is not just due to hiv but also because of weight loss or immunosuppression. 
 
2. Contraception: it is very important that the contraception a hiv positive woman chooses not only acts as birth control, but also to prevent the transmission of sexually transmitted diseases and hiv. Although condoms do not provide exceptional pregnancy prevention, they are excellent at preventing transmission of the hiv virus. Permanent sterilization is usually the most chosen contraceptive method for hiv serodiscordant couples.

3. Surgical complications: hiv positive women are at a higher risk of undergoing gynecologic surgery. This is because they are more vulnerable to pelvic infectious disease that requires surgical intervention. There is also a greater risk of developing vulvar cancer in hiv positive women. 

4. Fertility: there has been an increase in the number of seropositive women contemplating pregnancy and childbirth. Most couples resort to assisted reproduction to lower the risk of horizontal hiv transmission. Studies show that undergoing hiv treatment and having an undetectable viral load is helpful in preventing the transmission of hiv. It is important to consult a medical expert if you are unable to get pregnant after at least 6 months of trying. Fertility problems are more common in hiv positive women than hiv negative women.

Issues for HIV Positive Women

Sadly, there is no known cure for hiv. However, it can be controlled through medication. Hiv or the human immunodeficiency virus attacks the body's immune system and over time leaves it vulnerable to a number of other diseases. In its most advanced stages, it can lead to aids. Hence, it is essential to control this virus in its early stages.

Hiv treatment is known as antiretroviral therapy or art. This involves taking a series of hiv medicines on a daily basis. Art can help hiv patients live a longer, healthier life and can also reduce the risk of hiv transmission.

The first step towards getting treated for hiv is to get tested. This can be easily done at your nearest health center and the results will be kept confidential. With hiv prevention is better than cure and hence, if you have more than one sexual partner, you must insist on them getting tested as well.

As soon as you test positive for the virus, start the treatment. Do not wait till you start feeling sick. Art can be taken by anyone at any stage of the condition. If you are pregnant, breast feeding or have been diagnosed with early hiv infection, this is all the more important.

Hiv medication works by preventing the hiv cells from multiplying and thus reduces the amount of hiv cells in the body. A low level of hiv cells gives the immune system a chance to recover and strengthen itself. A lowered hiv count also reduces chances of transferring the virus to another person.

Art involves following a regimen of a number of medicines. There are 25 hiv medicines that can be grouped under six drug classes depending on how they affect hiv cells. These include:

1. Nucleoside reverse transcriptase inhibitors
2. Non-nucleoside reverse transcriptase inhibitors
3. Protease inhibitors
4. Fusion and entry inhibitors
5. Pharmacokinetic enhancers and
6. Integrase strand transfer inhibitors

Usually, a person is prescribed 3-4 hiv medicines from a minimum of 2 drug classes. A number of factors go into deciding what form of hiv treatment is most suitable to a patient. This includes the person's individual needs, symptoms presented, potential drug interactions and possible side effects. Convenience of following the regimen and costs are also taken into account while prescribing a form of treatment to a hiv patient.

Once treatment is started, art can be proven to be effective within 3-6 months by lowering the number of hiv cells in the body.

HIV/AIDS - How Can It Be Treated?

HIV or the human immunodeficiency virus is a retroviral agent that causes the immune system of the body to weaken and lead to cause the acquired immune deficiency syndrome (AIDS). It is now treatable. Research is being conducted all over the world to formulate a targeted drug therapy for combating this life-threatening disease. No vaccine is available, which renders the world population highly susceptible to contract the infection.

HIV infection spreads from an infected person through contact with certain bodily fluids like blood and semen. Spread from one human being to another is called as transmission of HIV. Mother to child transmission, i.e. perinatal transmission is also common. Healthcare and hospital staff are at a great risk of occupational transmission. Other causes of transmission include sharing intravenous drug equipment, needle prick injury, organ transplantation and artificial insemination. Since vaccination and targeted drug therapy for remission are not available, prevention strategies play an important role in curbing the spread of infection.

A three-level prevention strategy is implemented for HIV infection.

Primary prevention- Activities that focus on prevention of uninfected people being infected.
Secondary prevention- Aimed at the provision of proper health care and behavioral facilities for HIV infected people like lifestyle changes, welfare rights advice, anti-discrimination measures.
Tertiary prevention- Aimed at minimizing the symptoms of an infected person; includes the provision of prophylactic drugs and complementary therapies.
The risk avoidance approach for transmission of HIV infection includes certain measures like practicing mutual monogamy & delayed sexual activity in the young population. Safe and appropriate use of syringes and needles is advised. Unnecessary blood transfusions should be completely avoided. Routine screening of HIV antibody should be done.

Risk reduction approach propagates the mandatory use of condoms during sexual intercourse. Sexually transmitted diseases should be treated to avoid the risk of transmitting infection. Sterile syringes should be used. If blood transfusion is necessary, then blood transfused should be evaluated well to meet the quality standards.

If HIV infection is suspected, anti-retroviral drug therapy should be started.
The only universally approved method of HIV transmission during sexual activity is the use of condoms.
Pharmaceutical methods for prevention and treatment include antibiotic drug therapy for sexually transmitted diseases, anti-retroviral drugs for infected individuals, pre and post-exposure prophylaxis and use of low space dead syringes.
Pre-exposure prophylaxis is advised for people who are at a higher than average risk of contracting the infection.
Drug therapy consisting of a combination of Tenofovir and Emtricitabine is prescribed, one per day.
Visit the physician at regular intervals and routine screening is done. Post-exposure prophylaxis is considered to be effective if the treatment is started within an hour of exposure, to effectively reduce the risk of seroconversion. A drug combination of Emtricitabine, Tenofovir and Raltegravir is given.
Social initiatives are undertaken to spread awareness and educate people regarding AIDS. Behavioral change and acceptance of social message is necessary to benefit from the social initiatives. Sex education, LGBT sex education and awareness, safe injection use programs, needle exchange programs, safe sex practice education are some social strategies implemented.
Prevention of transmission of HIV from mothers to children involves anti-retroviral drug therapy during pregnancy and post birth in the newborn child. Breastfeeding is avoided and bottle feeding is advised.

HIV Transmission - How Can It Be Prevented?


- hiv testing in pregnancy should be done early so as standard care can be taken for the pregnant women.


- this hiv testing must be repeated in the third trimester, usually before 36 weeks of gestation. This should be done in women with hiv-seronegative and also in pregnant women who are at a high risk of developing hiv infection.


- expedited hiv tests should be performed at the time of delivery and labor and this is a must in women who have not been documented for hiv. The results of the test should be available in one hour of the test and the testing should be available 24 hours. In case the results are positive then, infant postnatal antiretroviral and intrapartum drug prophylaxis should be started immediately.


- women who have not been able to be tested for hiv at the time of labor and delivery are suggested expedited screening for hiv. Their screening can be done immediately postpartum or their babies should undergo screening. In case the infant and mother, both are positive, then infant antiretroviral drug prophylaxis should be started immediately. These mothers should avoid breastfeeding their babies, until the supplemental hiv tests are negative. In infants with positive hiv, prophylaxis should be discontinued and antiretroviral drug therapy should be started.


- in case of acute hiv infection during pregnancy, that is in the intrapartum period, or during breast feeding, initial testing can be performed with an antigen/antibody combination immunoassay. If the supplemental test is negative, then an additional test which is the virologic test (dna, rna) are necessary for the diagnosis of the hiv infection.
- if the mother is hiv positive then this information must be documented in the infant's medical record and also communicated to the infants care provider.
The knowledge of an antenatal maternal hiv infection allows the:
- women with hiv infection to get the correct antiretroviral therapy along with prophylaxis for the infections which might occur due to the immunocompromised state of the body. This also prevents and decreases the risk of transmission to their partners.
- when there is provision for antiretroviral therapy for the mother during pregnancy and labor along with antiretroviral drug prophylaxis for the baby there is less risk of perinatal transmission of the hiv.
- the hiv infected women should be counseled for a cesarean delivery. The option of an elective cesarean reduces the perinatal transmission of the hiv.
- the hiv women should be counseled about the risk of breastfeeding.

Identification and Management of Perinatal HIV Treatment

The human immunodeficiency virus or hiv is a virus which causes hiv infection and leads to" acquired immunodeficiency syndrome" or aids. Hiv is transmitted by different means and ways.


Unprotected sex is a primary mode of transmission of the hiv virus from an infected person to a healthy person. Unprotected sex refers to having sexual intercourse without using a condom or any other mode of protection. It leads to hiv transmission along with other sexually transmitted infections.


How does hiv occur from unprotected sex?
While having sex without protection, the hiv present in the body fluids such as blood, sperm, vaginal fluid, pre-cum or anal mucus of an hiv infected patient can pass on to the body of his/her partner. The transmission occurs through the membranes of the penis in men, vagina in women, the rectum and also through mouth and throat. It is more likely for an hiv patient to pass on the virus during the first few months after getting infected. This is because the virus spreads over body fluids during this stage.


Which types of sex are more risky?
Hiv is transmitted the most by having vaginal or anal sex. Anal sex accounts for being the riskiest because the lining present in the anus is much more delicate than the vaginal lining. It is prone to more damage, easily. There are two types of anal sex: receptive anal sex and insertive anal sex. Receptive anal sex is more risky.


Hiv can also be acquired from oral sex. This can happen in case the person giving oral sex has ulcers in the mouth, sore and bleeding gums. In case the person receiving the oral sex is already infected, the other person gets hiv.


A person who has sex with multiple partners regularly is at a high risk of getting hiv because of unprotected sex.


Prevention
Getting hiv from unprotected sex can be avoided if you use these precautions:


- condoms
Condoms offer the precaution against hiv infection from anal or vaginal sex. They should be used by men before any kind of sexual contact to restrict the passing of semen or fluid, which may be infected by hiv.


- lubricants
Sex is made easier by using lubricants and reduces the risk of tearing in the vagina or anus due to friction. The risk of a condom breaking is reduced using lubricants.


- dental dams
This is another precautionary device, which is a small sheet of plastic. It has to be placed to cover the mouth of the vagina or anus and reduce the risk of hiv transmission.
Unprotected sex is the primary cause of hiv and people who do not take precautions before sex are likely to be infected by hiv.

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