Researchers have shown they can safely and effectively infect human volunteers with Zika virus
Researchers in the United States have shown for the first time they can safely and effectively infect human volunteers with Zika virus, a step towards learning more about the disease and developing vaccines and treatments.
There are no vaccines or treatments, and the outbreak in the Americas ended before new ones could be fully tested. Infections have dwindled worldwide since, with about 40 000 reported last year from that region. Also significant, she added, was the mental health burden on pregnant women in endemic regions, who worry about the virus and their babies but have limited protection options.
The next step is evaluating the strains in male volunteers, in part to assess how long the virus, which can be sexually transmitted, stays infectious in semen.
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