Dey, Ayan, Molodecky, Natalie A., Verma, Harish, Sharma, Prashant, Yang, Jae Seung, Saletti, Giulietta, Ahmad, Mohammad, Bahl, Sunil K., Wierzba, Thomas F., Nandy, Ranjan K., Deshpande, Jagadish M., Sutter, Roland W., and Czerkinsky, Cecil. 2016 Dec 28. Background: The "gold standard" for assessing mucosal immunity after vaccination with poliovirus vaccines consists in measuring virus excretion in ...