Delayo J. Zomahoun, MD1; Ashley L. Burman, MPH1; Cynthia J. Snider, PhD2; Claire Chauvin, MPH1; Tracie Gardner, PhD1; Jacquelyn S.
Lickness, MPH2; Jamal A. Ahmed, MD1; Ousmane Diop, PhD1; Sue Gerber, PhD3; Abhijeet Anand, MBBS2 (View author affiliations)Surveillance for acute flaccid paralysis (AFP) is critical to detecting poliovirus circulation.
Environmental (sewage) surveillance supplements AFP surveillance in many locations.Poliovirus surveillance activities were modified as a result of the COVID-19 pandemic.
Reported AFP cases declined 33% from January to September of 2020 compared with the same period in 2019, and the number of environmental samples per site declined.