Update: influenza activity -- United States and worldwide, 1998-99 season, and composition of the 1999-2000 influenza vaccine.

Autor: US Department of Health and Human Services. Centers for Disease Control and Prevention (CORPORATE AUTHOR)
Zdroj: MMWR: Morbidity & Mortality Weekly Report. 5/14/1999, Vol. 48 Issue 18, p374-378. 5p.
Databáze: Academic Search Ultimate
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