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Zika virus disease is usually a mild viral illness. The virus is in the same family as West Nile, Dengue, and yellow fever. The virus is transmitted by mosquitoes (Aedes albopictus)also known as the Asian tiger mosquito. This species of mosquito currently circulates in the Southern part of North America, Central America, the Caribbean, the Northern parts of South America, and parts of Africa and Asia. The Asian tiger mosquito can also transmit dengue and chikungunya viruses. It is similar to CMV in that once you have had it you cannot get it again, it is a mild viral syndrome, but it can be devastating if a pregnant woman becomes infected. The Zika virus can be spread by mosquitoes, by sexual contact, and from mother to child while pregnant. If a pregnant woman contracts Zika, her baby is at risk of brain damage (microcephaly).