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Study affirms fractional dosing with yellow fever vaccine

According to a study today in the Annals of Internal Medicine, fractional dosing of the yellow fever vaccine offers recipients protective antibodies for up to 10 years without a booster dose. The study comes in conjunction with reports from ProMED noting that since September of 2017, 140 people in Nigeria have tested positive for the virus and two people in Edo likely died from yellow fever.

The results could inform the use of fractional dosing in preventive vaccination campaigns, and not just outbreak settings. In related news, Nigeria is vaccinating millions of people after nine people recently tested positive, and Dutch officials report an imported yellow fever case.

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