| progress toward poliomyelitis eradication--afghanistan and pakistan, january 2010-september 2011. | indigenous transmission of wild poliovirus (wpv) has never been interrupted in afghanistan, pakistan, india, and nigeria. among those countries, afghanistan and pakistan represent a common epidemiologic reservoir. this report updates previous reports (1,4) and describes polio eradication activities and progress in afghanistan and pakistan during january 2010--september 2011, as of october 31, 2011, and planned activities during 2011--2012 to address challenges to polio eradication. in afghanista ... | 2011 | 22071591 |