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World Polio Day: Need For Uninterrupted Vaccination During Pandemic

Hyderabad:   As the World Polio Day is observed around the globe amid the Covid-19 pandemic on Saturday, experts underlined the need for continuing the polio immunisation programme to help maintain India’s polio-free status.

Since March 2020, the pandemic has disrupted life-saving immunisation endeavours around the world, putting millions of children at risk of diseases like polio, diphtheria, and measles.

The disruption of such routine immunisation services may be unprecedented since the inception of the expanded programme on immunisation (EPI) in the 1970s, in both government and private sectors.

This may significantly decrease the immunity level of the population against polio, said Dr. Preethi Sharma, Consultant Pediatrician, KIMS Cuddles, Kondapur.

“Most hospitals have a separate outpatient department for any fever or Covid suspect cases and the immunisation area allows entry of only healthy babies/children. The parents need to be assured that the risk of Covid transmission during vaccination is almost negligible but missing the vaccine can definitely increase the child’s risk of getting infected with vaccine-preventable diseases, including polio,” she said.

In order to successfully eradicate polio, parents should get their child immunised with OPV and IPV and also continue to get the vaccine administered during government polio drives. Both vaccines are very safe and their use should be continued. The government should have campaigns to strengthen the immunisation drive.

After an uphill battle and multiple doses of oral polio vaccine, India was declared polio-free (wild poliovirus) in March 2014. This was a huge accomplishment as India was considered one of the most challenging countries.

“Though India is a wild poliovirus disease-free country currently, the cases of Vaccine Derived Polio Virus (VDPV) disease can be seen. The emergence of VDPV disease is a known risk of OPV (oral polio vaccine) vaccination, where the weakened live virus given as vaccine in OPV starts becoming virulent and thus gives rise to the disease in a few children among the lakhs that were vaccinated with it.”

There is a dire need to focus on getting more and more children vaccinated with IPV(Injectable Polio Vaccine), which not only poses no risk of VDPV but also gives 99 per cent protection from wild polio and VDPV disease.

Until all the children in the country are not vaccinated with IPV, the risk of polio resurgence either due to importations from neighbouring Pakistan and Afghanistan, the only two polio-endemic countries in the world now, or from VDPV will be there, the doctor said.

Another important step which the government has taken is to start using the inactivated (injectable) polio vaccine (IPV) in its routine schedule. IPV has been used by private practitioners and corporate hospitals for many years but now it can have widespread reach with the government adopting it in its routine immunisation schedule. IPV protects against polio without any risk of vaccine-derived polio. As wild poliovirus is eliminated, OPV needs to be phased out.

The government has already removed type 2 containing OPV (the trivalent OPV to bivalent OPV switch). The reason being the type 2 component contained in trivalent OPV accounts for more than 90 per cent of all vaccine derived poliovirus cases (bivalent OPV does not contain type 2).

“Year after year, and generation after generation, the government of India and the people here have taken a mission route with the vision to eradicate deadly polio. Administering polio drops to newborn babies was a small yet most effective means to tackling the spread of poliovirus. And it is the same commitment that is needed in these COVID-19 times to put an end to the deadly coronavirus.

“Not letting the guard down is the only way to overcome the present crisis. People must believe that following prescribed restrictions and ensuring safety norms is the only way we can come out of the problem,” said Dr. Ravindra Parigi, Consultant Neonatologist at Medicover Hospitals, Visakhapatnam.

On World Polio Day 2020, it is important to look at the learnings India and the world can take from the past efforts to overcome the current Covid-19 crisis. Though polio still exists in underdeveloped nations like Pakistan and Afghanistan, the instances have decreased by over 99 per cent in comparison with the 1980s, he added.

 (IANS)

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