Women and their children wait in line to receive a polio vaccine shot at a health centre in Tegucigalpa April 25, 2012. The Honduran Health Ministry on Wednesday began a nationwide campaign to vaccinate more than 1.4 million children against polio, hepatitis B, meningitis, rotavirus, pneumococcal infection, measles, rubella and mumps, local media reported. REUTERS/Jorge Cabrera (HONDURAS - Tags: HEALTH)