What are the 2 highest risk factors for contracting HIV?

Behaviours and conditions that put individuals at greater risk of contracting HIV include:

  • having unprotected anal or vaginal sex;
  • having another sexually transmitted infection (STI) such as syphilis, herpes, chlamydia, gonorrhoea and bacterial vaginosis;

Who is more at risk for HIV male or female?

Biologically, women are more vulnerable than men to infection because of the greater mucus area exposed to HIV during penile penetration. Women under age 17 years are at even greater risk because they have an underdeveloped cervix and low vaginal mucus production.

What is the highest risk factor for HIV?

In the United States, HIV is spread mainly through having anal or vaginal sex or sharing needles or syringes with an HIV-positive partner. Anal sex is the highest-risk behavior.

What are the risk factors for HIV?

High rates of sexually transmitted diseases (STDs). In 2018, rates of syphilis and gonorrhea were higher among men compared to women. Having other STDs can greatly increase the likelihood of getting or transmitting HIV. Using condoms the right way every time you have sex can protect from some STDs, including HIV. Injection drug use.

Why is HIV more common in men?

High rates of sexually transmitted diseases (STDs). In 2017, rates of syphilis and gonorrhea were higher among men compared to women. Having other STDs can greatly increase the likelihood of getting or transmitting HIV. Using condoms the right way every time you have sex can protect from some STDs, including HIV.

What are the risk factors for HIV infection among transgender women?

Also, transgender women who have sex with men are among the groups at highest risk for HIV infection, and injection drug users remain at significant risk for getting HIV.

What is the risk of HIV infection in sexually active men (MSM)?

There are no empirical data providing a direct estimate for MSM. Biological and epidemiological theories provide indirect evidence that ulcerative STD infection has similar effects on HIV risk in MSM. Having an STD may more than double the risk of an HIV-negative MSM of acquiring HIV during sex with an HIV-positive MSM partner.