Wanted: Volunteers willing to be infected with the Zika virus for science.
It may sound bizarre, but researchers are planning just such a study — this winter, when mosquitoes aren't biting — to help speed development of much-needed Zika vaccines.
The quest for a vaccine began less than a year ago as Brazil's massive outbreak revealed that Zika, once dismissed as a nuisance virus, can harm a fetus' brain if a woman is infected during pregnancy.
Now, researchers in the United States have begun safety testing of two vaccine candidates, and more experimental shots are poised to enter that preliminary testing soon. Any that seem promising will have to be...