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Polio Vaccines
Researchers from University of Zurich publish new studies and findings in the area of polio vaccines
October 22nd, 2008
According to recent research from Zurich, Switzerland, "From 2001 to 2004, Switzerland switched from routine vaccination with oral polio vaccine (OPV) to inactivated polio vaccine (IPV), using both vaccines in the intervening period. Since IPV is less effective at inducing mucosal immunity than OPV, this change might allow imported poliovirus to circulate undetected more easily in an increasingly IPV-immunized population." "Environmental monitoring is a recognized tool for identifying polioviruses in a community. To look for evidence of poliovirus circulation following cessation of OPV use, two sewage treatment plants located in the Zurich area were sampled from 2004 to...
Source: Vaccine Weekly (2008-10-22)
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