Projected life expectancy of people with HIV according to timing of diagnosis

Estimates the life expectancy of an HIV-infected MSM living in a developed country with extensive access to ART and healthcare. Finds that predicted life expectancy is relatively high in people with HIV who can access a wide range of antiretrovirals. Finds the greatest risk of excess mortality is due to delays in HIV diagnosis.

Life expectancy living with HIV: recent estimates and future implications

Review of the latest literature shows life expectancy of people with HIV has dramatically increased since effective antiretroviral therapy has been available, and it continues to improve. Modelling studies suggest life expectancy could improve further with increased uptake of HIV testing, better antiretroviral regimens and treatment strategies, and the adoption of healthier lifestyles by those living with HIV. Early diagnosis is particularly important.

Lack of transmission of HIV through human bites and scratches

Report of small study following an HIV-positive man with severe brain damage and poor dental hygiene (causing bleeding gums) who was frequently violent to hospital staff. After 2.5 years follow up, all of the 30 people he’d bitten or scratched remained HIV-negative.

Effectiveness of condoms in preventing HIV transmission

Recent meta-analyses of condom effectiveness suggest that condoms are 60 to 70% effective when used for HIV prophylaxis. A re-examination of HIV seroconversion studies suggests that condoms are 90 to 95% effective when used consistently, i.e. consistent condom users are 10 to 20 times less likely to become infected when exposed to the virus than are inconsistent or non-users. Similar results are obtained utilizing model-based estimation techniques, which indicate that condoms decrease the per-contact probability of male-to-female transmission of HIV by about 95%.

Condom effectiveness in reducing heterosexual HIV transmission

Review of 14 rigorous studies to re-estimate condom effectiveness in reducing heterosexual transmission of HIV. Finds consistent condoms use results in an 80% reduction in HIV incidence, i.e 80% less than the particular act without condoms. Consistent use is defined as using a condom for all acts of penetrative vaginal intercourse.