Several factors may be contributing to recent whooping cough outbreaks, but parents’ refusal to immunize their children is one
by José Lourenço via Facebook at October 09, 2013 at 03:47PM
http://www.scientificamerican.com/article.cfm?id=vaccination-opt-outs-found-to-contribute-to-whooping-cough-outbreaks-in-kids&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ScientificAmerican-News+%28Content%3A+News%29
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