This spring, a number of parents in Ratodero, a poor neighborhood in the city of Larkana in southern Pakistan, were worried about their children.
Their children had been running fevers for a while. The parents had been taking them to a clinic run by Dr. Muzaffar Ghangharo, a pediatrician. But the youngsters weren't responding to treatments to bring down the fever.
In late April, some of the parents wanted another opinion. So they took their children to a different medical center in Larkana, where they were seen by Dr. Imran Arbani.