W.H.O. Approves a Safe, Inexpensive Typhoid Vaccine by DONALD G. McNEIL Jr.

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The first typhoid vaccine safe for infants has been used in India since 2005, but won final certification only after an unusual experiment on university students.

Published: January 3, 2018 at 01:00AM

from NYT Health https://ift.tt/2qjNIcf