The World Health Organization aimed for global poliomyelitis eradication by 2000 via resolution WHA 41.28.
Despite extensive efforts, achieving a polio-free India remains a significant challenge.
Oral polio vaccine (OPV) has shown limited success in India, with high rates of vaccine failure and vaccine-associated paralytic polio (VAPP).
Purpose of the Study:
To investigate the reasons behind the high incidence of oral polio vaccine (OPV) failure in India.
To explore the contributing factors to the increasing cases of vaccine-associated paralytic polio (VAPP) in the country.
Main Methods:
This study critically reviews existing data and literature on polio eradication efforts in India.
Analysis focuses on vaccine efficacy, vaccine failure rates, and the occurrence of VAPP.
Investigates the impact of OPV administration, including to immunocompromised children, and the unavailability of inactivated polio vaccine (IPV).
Main Results:
Oral polio vaccine (OPV) has demonstrated a high incidence of failure in the Indian population.
A notable number of children have developed paralytic polio despite receiving multiple OPV doses.
Vaccine-associated paralytic polio (VAPP) cases are increasing, potentially exacerbated by vaccine failures and the use of OPV in immunocompromised individuals due to IPV unavailability.
Conclusions:
The current strategy utilizing oral polio vaccine (OPV) is insufficient for polio eradication in India due to high vaccine failure rates.
Urgent research is needed to identify the specific causes of OPV failure and VAPP in India.
The findings underscore the need for alternative strategies or improved vaccine approaches to achieve polio eradication in India.