'We grossly underestimated' Zika, expert says

The Zika virus can feed on the tiny brain cells of a fetus.

01:10 - Source: CNN
Zika
A mother and her baby, who has microcephaly, at the Altino Ventura Foundation Clinic in Recife, Brazil.
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Residents are seen past a public service announcement banner against the spread of Aedes mosquitoes, a carrier for the Zika virus, at a residential block at Aljunied Crescent neighbourhood in Singapore on August 29, 2016.   
Singapore on August 28 confirmed 41 locally transmitted cases of the Zika virus, which can cause deformities in unborn babies, and said more infections are likely. / AFP / ROSLAN RAHMAN        (Photo credit should read ROSLAN RAHMAN/AFP/Getty Images)
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View of Aedes aegypti mosquitoes infected with the Wolbachia bacterium --which reduces mosquito transmitted diseases such as dengue and chikungunya by shortening adult lifespan, affect mosquito reproduction and interfere with pathogen replication-- at the Oswaldo Cruz foundation in Rio de Janeiro, Brazil, on October 2, 2014. The mosquitoes, when released, are expected to quickly infiltrate the insect population and stop the spread of the disease. Small-scale trials have already been conducted in communities in northern Australia.
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MCALLEN, TX - APRIL 14:  A city environmental health worker displays literature to be distrubuted to the public on April 14, 2016 in McAllen, Texas. Health departments, especially in areas along the Texas-Mexico border, are preparing for the expected arrival of the Zika Virus, carried by the aegypti mosquito, which is endemic to the region. The U.S. Centers for Disease Control (CDC), announced this week that Zika is the definitive cause of birth defects seen in Brazil and other countries affected by the outbreak.  (Photo by John Moore/Getty Images)
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