DAR ES SALAAM Tuesday, September 02, 2008 (IRIN) - Millions of parents and guardians sent their children to be vaccinated on 30 and 31 August in a national campaign against measles, polio and other diseases, officials said on Tuesday. “The exercise has been generally successful as many parents turned out with their children in most districts in the country,” Donan Mbando, director of preventive health in the health ministry, said. Vice-president Ali Mohamed Shein urged parents and guardians to...