Proving Zika guilty: A long and painstaking task
By Kate Kelland LONDON,(Reuters) – Evidence is building for the theory that Zika can cause newborn brain defects and the World Health Organization is promising more answers in weeks, but nailing a definitive link will be neither simple nor swift. Picking apart numerous potential connections between mothers who show evidence of infection with the mosquito-borne virus and babies born with microcephaly, in which the head is abnormally small, will require precision and patience, specialists say. In the case of rubella, another similar virus that is now known to cause congenital defects, it was a decade before the matter was finally settled.
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Proving Zika guilty: A long and painstaking task