Rio de Janeiro: Unusually wet weather, poor sanitation and a public health service weakened by economic crisis are contributing to an outbreak in Brazil of Zika, a mosquito-carried virus linked to a surge in cases of children born with brain damage, health experts say. Researchers believe the virus - first thought to be relatively innocuous - may have arrived in Brazil during the 2014 football World Cup, carried by visitors from French Polynesia, where an outbreak had just occurred. "The virus found the perfect conditions in Brazil: a very efficient vector that loves human blood, millions of susceptible victims with no antibodies, ideal climate, and lots of places to breed,"...
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