This file photo taken on Jan. 27, 2016 shows an Aedes Aegypti mosquito being photographed in a laboratory of control of epidemiological vectors in San Salvador. / AFP / MARVIN RECINOS
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Mice given a single shot of one of two experimental Zika vaccines were completely protected when exposed to the virus one to two months later, a promising sign that similar vaccines under development for humans will protect against Zika, U.S. researchers said on Tuesday.Mice given either type of vaccine were 100 percent protected from Zika after a single shot. Unvaccinated mice that were exposed to the virus all developed symptoms of Zika.Both types of vaccines – DNA and inactivated virus vaccines – have been successfully developed to prevent infection from viruses related to Zika, including West Nile and dengue.The team also showed that antibodies taken from immunized mice could be used to protect other, unvaccinated mice, offering proof that the antibodies produced by the vaccines were specific to Zika.A second exposure to Zika 10 weeks after the first did not make the animals sick, suggesting that antibodies developed by the monkeys protected them against a second case of Zika.
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