Stigma stops people from getting tested for HIV, and staying on their treatment. Unless it's addressed, the AIDS epidemic will persist.
Up to 50% of the people who take the efavirenz antiretroviral react particularly badly to it and need to change drug regimens.
Current epidemiological and financial trends suggest there's a major risk of a substantial shortfall in the funds required to sustain life-saving antiretroviral programmes.
Young women in southern Africa are most at risk of becoming infected with HIV. If they take a pre-exposure prophylaxis like Truvada it could change their lives.