Papua New Guinea is no longer polio-free
Child in Papua New Guinea receiving OPV. Credit: WHO Last week we discussed the case of polio in Venezuela that turned out not to be polio. Unfortunately the same cannot…
Child in Papua New Guinea receiving OPV. Credit: WHO Last week we discussed the case of polio in Venezuela that turned out not to be polio. Unfortunately the same cannot…
…intestine, is vaccine-associated poliomyelitis. During the years that the Sabin poliovirus vaccines (also called oral poliovirus vaccine, or OPV) were used in the US, cases of poliomyelitis caused by vaccine-derived…
…to think about the status of the poliovirus eradication effort. So far this year 26 cases of poliomyelitis have been recorded – 23 caused by wild type virus, and three…
Eradication of poliomyelitis appears to be on track: types 2 and 3 polioviruses have been declared eradicated, and in the past 12 months there have been just 338 cases of…
…excretes polioviruses that can cause paralysis. These so-called vaccine-derived polioviruses (VDPV) can cause outbreaks of poliomyelitis in non-immune people, as described in Polio among the Amish. Poliovirus type 2 was…
…eliminate global poliomyelitis, then cease immunization with poliovirus at some point in the future. In 2002 an outbreak of polio in the Dominican Republic sent a warning that this goal…