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Pneumococcal Vaccine

23-Valent polysaccharide pneumococcal vaccine not effective in Navajo adults

Published in Medical Letter on the CDC and FDA, September 7th, 2003

The 23-valent polysaccharide vaccine against invasive pneumococcal disease was not effective in Navajo adults.

According to a study from the United States, "Invasive pneumococcal disease occurs two- to three-fold more often among Navajo adults than among adults in the general United States population. The objective of this observational study was to determine the effectiveness of the 23-valent pneumococcal polysaccharide vaccine (PPV23) among Navajo adults."

"Active surveillance identified cases of invasive pneumococcal disease during 1996-1997," reported Andrea L. Benin and collaborators at the Centers for Disease Control and Prevention. "Three...

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