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Vaccine-derived poliovirus found in Ghaziabad sewage
NDTV··11 Jun
A vaccine-derived poliovirus Type-1 was detected in a sewage sample from the Dundahera Sewage Treatment Plant in Ghaziabad. Health officials said the virus was vaccine-derived and non-virulent, so there is no immediate need to panic, but surveillance has been intensified.
Prism
What It Means For You
- Parents should not panic, but they should confirm that children have received all recommended polio vaccine doses.
- Environmental surveillance is meant to detect risks early, often before anyone becomes sick.
- Vaccination gaps in dense urban areas can allow weakened vaccine viruses to circulate long enough to become risky.
What's Happening
- VDPV1 was detected in a Ghaziabad sewage sample during routine surveillance.
- Health teams are screening children under five in affected and nearby areas.
- Officials are coordinating with the state, Union Health Ministry and WHO.
Polio-Free Does Not Mean No Vigilance
- India was declared polio-free by WHO in 2014 after eliminating wild poliovirus transmission.
- Vaccine-derived poliovirus is rare and usually becomes a concern where immunisation coverage is low.
- Sewage testing is a core tool in global polio eradication because many infections cause no symptoms.
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