Environmental samples from Campinas, São Paolo have tested positive for wild poliovirus type 1 (WPV1), though the country has not reported any polio cases since
Tag: wild polio virus
On Sunday, May 11, the World Health Organization reported the investigation of a possible wild poliovirus type 1 (WPV1) case in Somalia's Banadir region. A
Yet another case of type-1 poliovirus has surfaced in Pakistan’s Khyber Agency, the only tribal district in Asia where both type-1 and type-3 polioviruses
On August 31st, we reported that four children were diagnosed with polio in Xinjiang, China, a country that had been polio-free for eleven years.