Since the World Health Organization declared Zika a public health emergency in February, teams of scientists from all over the world have been attacking the virus from many different angles. They have made advances in understanding the structure of the virus, the historical path of the mosquitoes that carry it and the risk to babies still in the womb — important knowledge, but of little immediate practical use.
Now, the discoveries have finally led to something that might be able to stop the pathogen: a vaccine.
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