It’s one of the things that makes it harder for Zika to spread in places that aren’t very crowded and don’t have large numbers of the particular mosquito species, it doesn’t mean it can’t happen. But it means it’s unlikely to see a large outbreak.

Tom Frieden

Thomas R. Frieden has been since 2009 the Director of the U.S. Centers for Disease Control and Prevention and Acting Administrator of the Agency for Toxic Substances and Disease Registry. He was appointed by President Barack Obama. He served as Commissioner of the New York City Department of Health and Mental Hygiene from 2002–09.

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