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Number of wild poliovirus type 1 cases and circulating vaccine-derived poliovirus type 2 cases, by month of onset of paralysis--Afghanistan, January 2019-September 2022

The number of cases of WPV1 and cVDPV2 were 90 and 351, respectively. cVDPVs are genetically linked VDPV2 isolates for which there is evidence of person-to-person transmission in the community. Abbreviations: cVDPV2 = circulating vaccine-derived poliovirus type 2; WPV1 = wild poliovirus type 1. (Source: Mohamed A, Akbar IE, Chaudhury S, et al. Progress toward poliomyelitis eradication--Afghanistan, January 2021-September 2022. MMWR Morb Mortal Wkly Rep 2022;71[49]:1541-6. Public domain.)

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Associated Disorders

  • Aseptic meningitis
  • Bulbar polio
  • Bulbospinal polio
  • Infantile paralysis
  • Nonparalytic polio
  • Paralytic polio
  • Polioencephalitis
  • Post-polio progressive muscular atrophy
  • Post-polio syndrome
  • Spinal paralytic polio