Whenever Bellatu Bakane goes to her local market in the Ethiopian capital, Addis Ababa, she can't help but feel frustrated.

Many Ethiopians are skipping meals and cutting out "luxuries" like vegetables and eggs as the combination of drought and rising food prices squeezes already tight budgets. But for Bakane that's particularly dangerous; two-years ago she tested positive for HIV and began taking life-prolonging antiretrovirals.