Oral Polio Vaccine Causes Nearly All Cases of Paralytic Polio
Despite the introduction in March 2021 of a reportedly more stable and safer oral polio vaccine (OPV) called the novel oral polio vaccine type 2 (nOPV2), cases of circulating vaccine-derived polio (cVDPV) paralysis continue to be reported around the world, Ironically, continuing OPV vaccine campaigns in underdeveloped countries appears to be the main reason the […]
Polio Outbreaks in Burundi and Other African Nations Caused by Vaccine Strain of the Virus
The government of Burundi has declared a national public health emergency due to an outbreak of live vaccine strain poliovirus infections in that country. A mutated strain of the vaccine strain poliovirus, which originally came from the type 2 monovalent oral polio vaccine (mOPV2), was identified in a four-year-old boy in western Burundi and in […]
Polio Eradication Stalls with More Wild-Type and Vaccine Strain Polio Outbreaks
After 65 years of global polio mass vaccination campaigns, on Oct. 24, 2019 (“World Polio Day”) the World Health Organization (WHO) announced that, along with wild type 2 poliovirus declared eradicated in 2015, wild type 3 poliovirus has been eradicated from the earth.1 The credit for the achievement was given to the Global Polio Eradication […]
“Vaccine-Derived” Polio on the Rise
The Global Polio Eradication Initiative (GPEI) last week reported that there have been a total of 22 confirmed cases of vaccine-derived polio paralysis, thus far, in 2019. The latest two cases involve a person from Sichuan province in China and a person in Angola. Other evidence of circulating vaccine strain poliovirus type 2 (cVDPV2) has […]
