Senin, 28 Maret 2016

Old Vaccine, New Tricks: Revive Early Pertussis Shot, Study Says

Newer isn't always better — some researchers are proposing to bring back an older version of the whooping cough vaccine, because multiple studies show that today's version doesn't protect as well as the earlier kind.

from LiveScience.com http://ift.tt/1Uy5tMQ
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