The US now fulfil the criteria to enter the World Health Organization ’s ( WHO ) list of state where broadcast vaccine - derived poliovirus ( cVDPVs ) have been identified and are in circulation , the CDCannouncedon Tuesday . This is due to an on-going eruption in Rockland County , New York commonwealth , and ring areas . Joining them on the watchlist are around 30 other countries , includingthe UK , Ukraine , Israel , Yemen , and a great numeral of low- and middle - income counties in Africa .

Now the virus has been detected in an individual and an environmental sample , the US match the WHO ’s definition of a country with circulating cVDPV .

Poliois a highly infectious viral disease that can affect the nervous scheme and cause muscle weakness , for the most part dissemble children under 5 yr of years . Although ahuge threat to the populationjust decades ago , the disease is now preventable thanks to a safe and good vaccinum ( which does n’t include the hurt virus found in the oral infantile paralysis vaccine ) .

The striving of the virus is type 2 VDPV ( vaccinum - derive poliovirus ) . These poliovirus are touch to a weaken form of the computer virus used in some older forms of the oral infantile paralysis vaccine . This weakened form of the virus can acquire over time and behave more like the course occurring virus , meaning it can potentially taint the unvaccinated .

However , this oral polio vaccinum has not been used in the US for decades , suggesting the cases were likely imported from elsewhere in the domain where this vaccine case is still used . It ’s also illustrious that Rockland Country has a relatively low inoculation charge per unit compared to the rest of the US .

The CDC stressed that cVDPVs are not due to a small fry receiving the polio vaccine and that vaccination remains the practiced room to cater this disease .

“ Polio vaccination is the safest and good way to press this debilitate disease and it is imperative that hoi polloi in these communities who are unvaccinated get up to date on polio vaccination right away , ” Dr José R. Romero , Director of CDC ’s National Center for Immunization and Respiratory Diseases , said in astatement .

“ We can not emphasize enough that polio is a dangerous disease for which there is no cure , ” DrRomeroemphasized