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Enterovirus Surveillance -- United States, 1987

Since 1970, CDC has requested reports on enterovirus serotypes isolated by state health department laboratories. These reports are submitted to CDC on a monthly basis approximately 6 to 8 weeks after a specimen is submitted to the state virology laboratory. Since 1985, reports from early in the enterovirus season (March-May) have been tabulated and used to predict the types likely to be commonly isolated during the peak of the season (usually July-October).

This year, CDC has received reports of 47 nonpolio enterovirus (NPEV) isolates identified by state virology laboratories from March through May. Echovirus 11 was isolated most frequently (nine isolates), followed by echovirus 6 (eight isolates), coxsackieviruses B4 and A9 (five each), and coxsackievirus B3 and echoviruses 9 and 14 (three each). In 1986, the six most common NPEV isolates were echovirus 11 (184 of the 1,192 isolates), echovirus 4 (162), echovirus 7 (155), echovirus 18 (98), coxsackieviruses B4 and B5 (92 each). These six NPEV types represented 66% of the total enterovirus isolates reported for 1986. Reported by: State Virology Laboratory Directors. Respiratory and Enterovirus Br, Div of Viral Diseases, Center for Infectious Diseases, CDC.

Editorial Note

Editorial Note: A retrospective study of CDC's NPEV surveillance data shows that isolates from March through May predict the types likely to be isolated from July through December, which includes the peak enterovirus season (1). In the past, the six most common isolates from March through May have accounted for an average of 59% of the isolates from July through December. In 1986, they accounted for 52% of the isolates from July through December. The reports of early 1987 isolates suggest that echoviruses 6, 9, 11, and 14 and coxsackieviruses A9, B3, and B4 are likely to be common NPEV isolates this year. Six of the top seven isolates reported from March through May this year and all of the top six isolates reported in 1986 were among the top 15 most frequently isolated NPEVs for the period 1970-1983 (1).

Reference

  1. Strikas RA, Anderson LJ, Parker RA. Temporal and geographic patterns of isolates of nonpolio enterovirus in the United States, 1970-1983. J Infect Dis 1986;153:346-51.



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