circulating vaccine-derived poliovirus

The switch from trivalent to bivalent oral poliovirus vaccine: Will it lead to polio?

In four months, 155 countries will together switch from using trivalent to bivalent oral poliovirus vaccine. Will this change lead to more cases of poliomyelitis? There are three serotypes of poliovirus, each of which can cause paralytic poliomyelitis. The Sabin oral poliovirus vaccine (OPV), which has been used globally by WHO in the eradication effort, is …

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TWiV 371: Sympathy for the devil

On episode #371 of the science show This Week in Virology, the TWiVologists discuss the finding of a second transmissible cancer in Tasmanian devils, and development of new poliovirus strains for the production of inactivated vaccine in the post-eradication era. You can find TWiV #371 at www.microbe.tv/twiv.

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