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?

For nearly 30 years, HIV (human immunodeficiency virus) and AIDS (acquired immunodeficiency syndrome) have been shrouded in myths and misconceptions. In some cases, these mistaken ideas have prompted the very behavior that cause more people to become HIV positive. Here are the top five myths about HIV, along with the facts to dispute them.

Myth No. 1: I can get HIV by being around people who are HIV-positive.

The evidence shows that HIV is non communicable and does not spread through touch, tears, sweat or saliva. You cannot catch HIV by:

    Breathing the same air as someone who is HIV-positive
    Touching a toilet seat or doorknob handle after an HIV-positive person
    Drinking from a water fountain
    Hugging, kissing, or shaking hands with someone who is HIV-positive
    Sharing eating utensils with an HIV-positive person
    Using exercise equipment at a gym

You can get it from infected blood, semen, vaginal fluid, or mother's milk.

Myth No. 2: I can get HIV from mosquitoes.

Because HIV is spread through blood, people have worried that biting or bloodsucking insects might spread HIV. Several studies, however, show no evidence to support this, even in areas with lots of mosquitoes and cases of HIV. When insects bite, they do not inject the blood of the person or animal they have last bitten. Also, HIV lives for only a short time inside an insect.

Myth No. 3: I'm HIV positive, my life is over.

In the early years of the disease epidemic, the death rate from AIDS was extremely high. But today, antiretroviral drugs allow HIV positive people and even those with AIDS to live much longer, normal and productive lives.

Myth No. 4: My partner and I are both HIV positive there's no reason for us to practice safer sex.

Practising safer sex, wearing condoms or using dental dams can protect you both from becoming exposed to other (potentially drug resistant) strains of HIV.

Myth No. 5: You can't get HIV from oral sex.

It's true that oral sex is less risky than some other types of sex. But you can get HIV by having oral sex with either a man or a woman who is HIV positive. Always use a latex barrier during oral sex.

Top 5 Myths & Misconceptions About HIV & AIDS!

Certain diseases are a major cause of concern as often these diseases can cause severe health complications. Various campaigns and awareness have been spread both by the government and NGOs for practicing safe sex to fight against these sexually transmitted diseases. Here are a few tips on how to avoid contracting sexually transmitted diseases.

1. Selective Abstinence: Selective abstinence is when people indulge in certain sexual activities, but limit in what they do to avoid the chances of contracting sexually transmitted diseases. People who do practice selective abstinence run a lower risk of contracting sexually transmitted diseases, which is also dependent on the type of sexual activity they indulge in as certain sexual acts have a higher chance of spreading STDs than others.

2. Using condoms: Using latex condoms decreases the chances of contracting sexually transmitted diseases. If you use lubricants, make sure that they are water based. Condoms are however not 100% effective at preventing sexually transmitted diseases, but reduce the chance of infection to a great extent. It is highly advised to learn how to properly use condoms.

3. Mutual monogamy: Another way to avoid getting infected by STDs is to practice mutual monogamy. If you and your partner do not have sex with anyone else, then it greatly reduces the chances of getting infected with sexually transmitted diseases.

4. Getting tested: Getting tested for sexually transmitted diseases as well as asking your partner to do so decreases the chances of transmitting sexually transmitted diseases. Refrain from having sex if either of you test positive.

5. Avoid alcohol and recreational drugs: Avoiding the usage of recreational drugs and alcohol reduces the chances of contracting STDs. Indulging in sexual activities while being highly intoxicated can both cause you to forget practicing safe sex.

6. Practicing healthy habits: Practicing certain healthy habits also reduces the chances of contracting sexually transmitted diseases. These include avoiding sharing towels and undergarments, washing before and after sexual intercourse and getting a vaccination for hepatitis B.

7. Low risk and high risk activities: Certain sexual activities such as open mouth kissing and hand to genital contact have a lower risk of infection. Other activities such as oral sex, vaginal intercourse, and genital to genital contact have a higher chance of infection. Understanding the risks better would allow you to avoid contacting diseases easily.

7 Tips to Avoid Sexually Transmitted Diseases

HIV: QUICK FACTSIntroductionThe human immunodeficiency virus (HIV) is a subgroup of retrovirus (lentivirus) that causes HIV infection. After a period of time, this infection leads to what is called acquired immunodeficiency syndrome (AIDS).

Epidemiology

According to the Centers for Disease Control and Prevention (CDC), from 2010-2015, the estimated rate of HIV infection in all 50 US states decreased from 14.2 per 100,000 population in 2010 to 12.3 per 100,000 population in 2015. In 2015, 39,513 individuals were diagnosed with HIV infection. From 2010 to 2014, the annual number of new HIV infections decreased by 9%.

Virology HIV-1 and HIV-2 are retroviruses in the Retroviridae family, Lentivirus genus. They are enveloped, diploid, single-stranded RNA viruses with a DNA intermediate.Upon entry into the target cell, the viral RNA genome is converted into double-stranded DNA by an enzyme, reverse transcriptase that is transported along with the viral genome in the virus particle. The resulting viral DNA is then imported into the cell nucleus and integrated into the cellular DNA by a virally encoded enzyme, integrase. HIV contains three retroviral genes, namely gag, pol, and env.

Gag gene: Encodes group-specific antigen; the inner structural proteins
Pol gene: Encodes polymerase; it also contains integrase and protease
Env gene: Encodes the viral envelope, the outer structural proteins responsible for cell-type specificity. Glycoprotein 120, the viral envelope protein, binds to the host CD4+molecule
Pathophysiology

HIV infects vital cells in the human immune system, such as helper T cells (specifically CD4+ T cells), macrophages, and dendritic cells and leads to cellular immune deficiency. This results in the development of opportunistic infections and neoplastic processes.

Mode of Transmission
Sexual intercourse: Unprotected sexual intercourse; especially receptive anal intercourse and different sexual partnersContact with or transfer of blood, pre-ejaculate, semen, and vaginal fluids infected with the virus.Spread from an infected mother to her infant through breast milk. An HIV-positive mother can transmit HIV to her baby both during pregnancy and childbirth due to exposure to her blood or vaginal fluid.

Signs and Symptoms There are 3 categories of infection 

Category A: Asymptomatic HIV infection without a history of symptoms or AIDS-defining conditions
Category B: HIV infection with symptoms that are directly attributable to HIV infection
Category C: HIV infection with AIDS-defining opportunistic infections
Investigation

A high-sensitivity enzyme-linked immunosorbent assay (ELISA) should be used for screening.

Management

Start with antiretroviral therapy (ART) in all HIV-infected adults ready to start therapy. 
CD4 count is no longer a criterion for starting the therapy.
Use of nucleoside reverse transcriptase inhibitors and protease inhibitors.
For refractory cases, during the failing treatment regimen and before switching therapy, use rapid confirmation, perform resistance testing and reevaluate.

HIV - Quick Facts Need To Know!

Sexually Transmitted Diseases (STDs) are infections that you can get from having sex with someone who already has the infection. The causes of STDs are bacteria, parasites, and viruses. These infections often do not cause any symptoms, and can still be passed unknowingly from the infected partner to the other. However, some common symptoms include genital itching, lesions, flu / fever like symptoms and feeling pain / pressure in the lower part of the stomach.

There are many kinds of STDs including Chlamydia, gonorrhea, genital herpes, syphilis and HIV.

The important thing to understand and know is that these STDs can be prevented.

3 ways of preventing STDS are:

1. Precautions before having sex

There are some things you can do to reduce your risk of contracting STDs before having sex. This include:

  Limiting the number of sexual partners
  Talking honestly with partners about your sexual history
  Getting tested, along with your partner, before having sex
  Getting timely vaccination against HPV and HBV

If you have been diagnosed with an STD you should tell your partner about it and also explicitly ask your partner if they have had an STD.

2. Practice safe sex

Use a latex condom every time you have sex and use a water-based lubricant. If your sex life involves intercourse, anal or vaginal, make up your mind to never have sex without a condom. If you or your partner is at a high risk of STDs, be consistent about barrier use during oral sex as well. Avoid sharing towels or underclothing to reduce the risk of an STD. Check the expiration date of the condom and make sure that it has an air bubble, which shows it has not been punctured. Dispose the condom properly and never reuse it.

3. Don't drink Alcohol or use drugs before having sex

It's impossible to make responsible choices about your sex life under the influence of drugs or alcohol. When you are under the influence of any one of them, you are not in your mind and are likelier to choose a partner you wouldn't have picked otherwise. In that case, you may be at a higher risk of contracting an STD. Also, if you are on birth control pills and you vomit, the pills could lose some effectiveness.



3 Ways You Can Prevent STDs (Sexually Transmitted Diseases)

HIV/AIDS is a STD which is caused by the Human Immunodeficiency Virus (HIV). The HIV virus attacks the immune system and makes the body vulnerable to other diseases. AIDS is the last stage disorder caused by HIV infection. This disorder destroys the human immune system which might lead to other life- threatening diseases such as cancer. If diagnosed with HIV, one must necessarily maintain a healthy dietary regime because the nutrients one derives go on to contribute to the development of the immune system, thus providing resistance to the side effects of the HIV medicines.

The early symptoms of HIV/AIDS appear within a few weeks after sexual contact. The early symptoms include a headache, pain in the muscles and the joints, rashes and inflamed lymph nodes. The early symptoms tend to disappear within 2 to 3 weeks. The next set of symptoms might appear after a few years which might be persistent. The symptoms include fatigue, loss of body weight, inflated lymph nodes, fever and sweat during the night.

If you are diagnosed with HIV, you should:

Try to maintain a daily diet containing vegetables, legumes, and fruits which provide you energy.
Try to include a little bit of fat, carbohydrates (at least 3 servings of vegetable per day), calcium (dairy products) and low-fat protein sources (generally 80-150 gram per day of fish, skinned chicken, low-fat cheese etc.) in your everyday meal.
Maintain a daily calorie intake of 17-25 calories per pound depending on whether the person is losing weight.
Vitamins and minerals are particularly necessary to repair the cells damaged by the HIV virus. 
So, it is necessary to intake foods such as eggs, milk, peanuts, green vegetables, meat, beans and broccolis on a regular basis, if you have been diagnosed with HIV.

If you are suffering from HIV, you must maintain the following food safety measures:

You should try to restrict the intake of fat
Restrict your alcohol intake
You should try to avoid fast foods
You should also limit your regular sugar intake and should avoid foods with extra sugar

HIV/AIDS: Diet, Nutrition and Food Safety You Must Follow

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