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Morning Rounds: Zika virus, sleep deprivation and reading for health

Zika has been linked to birth defects in Latin America, but scientists say more research needs to be done to confirm a connection. CBS News chief medical correspondent Dr. Jon LaPook and CBS News contributor Dr. Holly Phillips discuss what expectant mothers need to know about the virus. Also, they discuss the effects of sleep deprivation and whether book clubs and social groups may lead to a longer life.
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