Fifty-six reports were received from state virology
laboratories
of nonpolio enterovirus (NPEV) isolates identified in March, April,
or
May 1985. Coxsackievirus B2 was isolated most frequently (18/56),
followed by coxsackievirus A9 and echoviruses 6, 7, and 11, with
four
each, then echovirus 4 and coxsackievirus B5, with three each.
In 1984, the most common isolates were echovirus 9, with 16.7%
(266/1,589) of all isolates; echovirus 11, with 9.1%;
coxsackievirus
B5, with 8.9%; echovirus 30, with 8.3%; coxsackievirus B2, with
7.8%;
and coxsackievirus A9, with 7.6%.
Reported by Respiratory and Enterovirus Br, Div of Viral Diseases,
Center for Infectious Diseases, CDC.
Editorial Note
Editorial Note: A retrospective study of CDC's enterovirus
surveillance data from 1970 to 1983 shows that NPEV types isolated
in
March through May (early isolates) are predictive of types likely
to
be isolated during the peak enterovirus season (1). In this study,
the six most frequent early isolates accounted for an average of
59%,
and always more than 50%, of isolates in July through December.
Reports of early isolates suggest that coxsackieviruses A9, B2, and
B5
and echoviruses 4, 6, 7, and 11 are likely to be common isolates
this
enterovirus season.
Reference
CDC. Unpublished data.
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