Population
130 sewage samples collected between January 2001 and December 2001 from eight provinces of Egypt
Design
Other
Follow-up
12 months (January 2001 to December 2001)
Authors
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Persistent wild poliovirus in sewage signals eradication gaps; leaves open optimal surveillance integration before guiding policy.
Environmental surveillance detected wild polioviruses in sewage despite immunization campaigns, highlighting its utility in monitoring polio eradication.
Laila El Bassioni (2003) studied this question.
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