It's happening again. In early September, a cluster of unexplained child deaths in a small town in Madhya Pradesh sent local health workers scrambling. At least 11 victims - aged one to six - had died within days of taking a common cough syrup. Officials tested everything from drinking water to mosquitoes before the truth emerged: their kidneys had failed. Weeks later, a state laboratory in the southern city of Chennai confirmed the worst. The syrup in question contained 48.6% diethylene glycol,