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Vaccine-derived polio virus was detected within the environmental surveillance of sewage samples from Kolkata, says Well being Ministry official.
Vaccine-derived polio virus was detected within the environmental surveillance of sewage samples from Kolkata, says Well being Ministry official.
Not wild poliovirus however vaccine-derived poliovirus (VDPV) was detected within the environmental surveillance of sewage samples from Kolkata, mentioned a senior Well being Ministry official on Thursday. “The genetic sequencing is finished at ICMR-Nationwide Institute of Virology, Mumbai, and this was mentioned with the World Well being Organisation (WHO). It might probably happen in any nation the place oral polio vaccine (OPV) is given,’’ added the official.
The Ministry mentioned that the final time such a VDPV was detected was in New Delhi in 2018.
State well being officers detected the presence of VDPV from sewage waters in Kolkata earlier this week. A VDPV is a pressure of the weakened poliovirus that was initially included in OPV and that has modified over time and behaves extra just like the wild or naturally occurring virus.
Officers from Kolkata added that sewage monitoring goes on all through the nation and this virus was present in a pattern in Kolkata. “Most certainly it has come from somebody’s intestine who’s immune poor and has since multiplied. It isn’t a case of human-to-human polio switch,” mentioned State well being authorities.
In keeping with WHO, Poliomyelitis (polio) is a extremely infectious viral illness that largely impacts kids beneath 5 years. The virus is transmitted by person-to-person unfold primarily by the faecal-oral route or, much less regularly, by a typical car (e.g. contaminated water or meals) and multiplies within the gut, from the place it might invade the nervous system and trigger paralysis.
Of the three strains of untamed poliovirus (kind 1, kind 2 and kind 3), wild poliovirus kind 2 was eradicated in 1999 and no case of untamed poliovirus kind 3 has been discovered for the reason that final reported case in Nigeria in November 2012. Each strains have formally been licensed as globally eradicated. As on 2020, wild poliovirus kind 1 impacts two international locations — Pakistan and Afghanistan — in response to the WHO.
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