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Poliovirus identified in London’s sewers, says British health agency

Poliovirus identified in London’s sewers, says British health agency

 


The UK Health and Safety Agency (UKHSA) said in a statement Wednesday that investigations are underway after several closely related viruses were found in sewage samples from Bekton sewage treatment plants taken between February and May. Said that.

“It is normal for UK sewage samples to detect one to three” vaccine-like “polioviruses each year, but these are always one-off discoveries and never detected again,” UKHSA said. Says.

“These previous detections occurred when individuals vaccinated with live oral polio vaccines returned or traveled to the United Kingdom and easily” shed “traces of poliovirus, such as vaccines, in their feces.” Added.

Recent samples show that the virus has “evolved and is now classified as” vaccine-derived “poliovirus type 2 (VDPV 2), a serious illness such as paralysis in completely unvaccinated individuals. I rang the alarm because it could cause the virus. “UKHSA said.

No cases of the virus have been reported and the risk to the public is considered low. However, UKHSA consultant epidemiologist Vanessa Saliba urged the public to ensure that the polio vaccine was up to date.

“Most of the UK’s population is protected from vaccination during childhood, but in some areas with low vaccination rates, individuals may remain at risk,” Sulliva said in a statement. There is. “

Malawi discovers polio, wild case in Africa for the first time in more than 5 years

“Detection of VDPV2 may have had some spread between closely related individuals in northern and eastern London, suggesting that they are currently shedding type 2 poliovirus strains in their faeces. “I’m doing it,” he added.

Large-scale global vaccination campaigns have long been underway to eradicate wild poliovirus. The UKHSA stated that the last such case of wild polio contracted in the United Kingdom was confirmed in 1984 and the United Kingdom was declared free of polio in 2003.

Vaccine-derived polioviruses, such as those recently identified in London, are derived from the attenuated poliovirus of live oral polio vaccines used in parts of the world.

These viruses change over time and can behave like wild viruses, and vaccine-derived poliovirus can spread, especially among unvaccinated people.

Symptoms of polio include fever, malaise, headache, vomiting, neck stiffness, limb pain, and, to a very small extent, paralysis, which is often permanent. There is no cure for polio.

Sources

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2/ https://www.cnn.com/2022/06/22/uk/poliovirus-london-sewage-samples-intl-gbr/index.html

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