A paramedic takes a blood sample from a baby for a HIV test in Larkana, Pakistan, on May 9. The government is offering screenings in the wake of an HIV outbreak. Rizwan Tabassum /AFP/Getty Images hide caption toggle caption Rizwan Tabassum /AFP/Getty Images Goats and Soda Medical Investigation: How Did 494 Children In 1 Pakistani City Get HIV? May 21, 2019 In late April, a tragedy began to unfold in Larkana. First one, then 15, now hundreds of youngsters have been found to be HIV-positive. Who is responsible?