Poliomyelitis Study Reveals Long-Term Dynamics of Wild and Vaccine-Derived Polioviruses

Strategic Insights -

Researchers from Sechenov University have conducted a comprehensive study on the long-term dynamics of wild and vaccine-derived polioviruses (VDPV) circulation from 2014-2023. The study highlights the importance of maintaining high immunization coverage with trivalent inactivated poliovirus vaccine (IPV) and developing m-OPV2 production for rapid outbreak response. The research also emphasizes the need to improve epidemiological surveillance methods to prevent the introduction of wild virus into currently polio-free countries.

Key Takeaways:

  • The study analyzed the circulation of wild and vaccine-derived polioviruses from 2014-2023, revealing that cases of wild poliovirus disease were reported in Afghanistan and Pakistan in 2023.
  • The research identified various sources of VDPV, including environmental objects worldwide, which were found to be a major cause of acute flaccid paralysis.
  • The study highlights the importance of maintaining high immunization coverage with trivalent IPV to prevent the introduction of wild virus into polio-free countries.
  • The research emphasizes the need to develop m-OPV2 production for rapid outbreak response to control poliovirus outbreaks.
  • The study also emphasizes the need to improve epidemiological surveillance methods to detect and respond to poliovirus outbreaks.
  • The researchers stress the importance of maintaining high immunization coverage with trivalent IPV in Afghanistan and Pakistan to prevent the spread of wild poliovirus.
  • The study provides information about polio surveillance methods, highlighting the need to improve these methods to detect and respond to poliovirus outbreaks.
  • The study reveals that cases of wild poliovirus disease were reported in Afghanistan and Pakistan in 2023, highlighting the need to maintain high immunization coverage in these countries.

Statistics:

  • The study analyzed the circulation of wild and vaccine-derived polioviruses from 2014-2023 (9 years).
  • The research identified 12 sources of VDPV, including environmental objects worldwide.
  • The study highlights the importance of maintaining high immunization coverage with trivalent IPV to prevent the introduction of wild virus into polio-free countries.
  • The research emphasizes the need to develop m-OPV2 production for rapid outbreak response, which is expected to be available by 2025.
  • The study emphasizes the need to improve epidemiological surveillance methods, which are currently in use globally.

Sources:

  • The Epidemic Situation of Polio in the World in 2014 -2023 (Epidemiologia i vakcinoprofilaktika, 2025, 24(2): 88-97)
  • https://www.epidemvac.ru
  • Numikom LLC
  • doi-org.sdpl.idm.oclc.org/10.31631/2073-3046-2025-24-2-88-97