Additionally, sera from 28 children less than 10 years of age and immunised with IPV only were analysed.
The neutralisation assay against poliovirus was performed according to WHO guidelines.
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In October 2007, the working group CEN/TC 216 of the European Committee for standardisation suggested that the Sabin oral poliovirus vaccine type 1 strain (LSc-2ab) presently used for virucidal tests should be replaced by another attenuated vaccine poliovirus type 1 strain, CHAT.
There is less pressure to find someone to hook up with since these sites do not focus on dating but rather on community.This list of support groups is current as of April 2017.These groups are run by different individuals and are separate from the STA.The lack of neutralising antibodies against the CHAT strain in persons vaccinated with OPV might be associated with an increased risk of reinfection with the CHAT polio virus type 1, and this implies a putative risk of transmission of the virus to polio-free communities.We strongly suggest that laboratory workers who were immunised with OPV receive a booster vaccination with IPV before handling CHAT in the laboratory.