371_Aids in Cambodia Published November 10, 2012 at 651 × 436in Aids in Cambodia CAMBODIA. Phnom Penh. Srey Toi smoking yabaa (crazy medicine) in her room. Yabaa is a higly addictive and extremely cheap metamphetamine. She is HIV positive and works as a prostitute in one of the bars of the capital catering to foreigners.