Vaccine Derived Poliovirus (VDPV).

Area of Science:

• Virology
• Public Health
• Immunology

Background:

• Poliomyelitis is caused by poliovirus, an enterovirus.
• Vaccine-derived polioviruses (VDPVs) emerge from live poliovirus in the Oral Polio Virus vaccine (OPV).
• VDPV emergence is a significant global challenge for polio eradication, with thousands of cases reported in recent years.

Purpose of the Study:

• To highlight the global challenge posed by VDPVs.
• To discuss factors contributing to the increase in circulating VDPVs (cVDPVs).
• To suggest strategies for controlling VDPV spread and eradicating poliomyelitis.

Main Methods:

• The abstract does not detail specific experimental methods.
• It relies on reported case numbers and discusses contributing factors and potential strategies.

Main Results:

• VDPVs continue to affect various regions globally, with over 1000 cases in 2020 and over 600 in 2021.
• Factors like low vaccination rates, exacerbated by the COVID-19 pandemic, contribute to the rise in cVDPVs.
• Monovalent OPV (mOPV-2) is identified as a potential strategy to control VDPV spread.

Conclusions:

• Increased immunization rates and safer vaccine alternatives are essential to minimize VDPV risk.
• Continued vigilance and investment in immunization programs are necessary for global polio eradication.
• Achieving a polio-free world requires sustained global effort.