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Nonpolio Enterovirus Surveillance -- United States, January-October 1984

Through October 1984, 896 nonpolio enterovirus (NPEV) isolates have been reported in the United States through CDC's enterovirus surveillance system. This is substantially lower than the 1,415 isolates reported for the same period in 1983. The five most frequently reported NPEV types this year have been Echovirus 9 (170/896; 19.0%), Echovirus 30 (91/896; 10.2%), Coxsackievirus B5 (89/896; 9.9%), Echovirus 11 (72/896; 8.0%), and Coxsackievirus A9 (69/896; 7.7%). The five most common NPEV types in each of the U.S. regions are listed in Table 6. Reported by Respiratory and Enterovirus Br, Div of Viral Diseases, Center for Infectious Diseases, CDC.

Editorial Note

Editorial Note: Earlier this year, it was predicted that five NPEV types (Echoviruses 9 and 7 and Coxsackieviruses A9, B4, and B5) would be frequently isolated in the United States based on early isolation data from three U.S. regions (1). To date, these types make up 421 (47.0%) of 896 of all reported NPEV isolates, and all five types have been among the 10 most commonly reported types in the United States this year. In years (such as 1984) when fewer than 1,800 enteroviruses are reported, a retrospective CDC study demonstrated that fewer than half of all NPEV reported are predictable; in years with 1,800 or more enteroviruses reported, over 69% of reported NPEV can be predicted.

Reference

  1. CDC. Enterovirus surveillance--United States, 1984. MMWR 1984;33:388.



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