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Infectious diseases: Zika virus cases lower, but virus remains a risk

Infectious diseases: Zika virus cases lower, but virus remains a risk

The number of reported Zika virus cases is much lower so far this year than at this point in 2017, but pregnant women remain advised not to travel to risky areas. The virus is primarily transmitted by bite of an infected Aedes species mosquito, above. (Dreamstime/TNS)