British health authorities say they will offer a polio booster dose to children aged 1 to 9 in London after finding evidence the virus has been spreading in multiple regions of the capital despite not confirming any cases of the paralytic disease.
In a statement on Wednesday, Britain’s Health Security Agency said it had detected polio viruses derived from the oral polio vaccine in sewage water from eight boroughs of London.
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— UK Health Security Agency (@UKHSA) August 10, 2022
Dr. Vanessa Saliba, an HSA consultant epidemiologist, said the virus was being transmitted in areas with lower vaccination rates, putting residents not fully vaccinated at greater risk.
The agency said it was working closely with health authorities in the U.S. and Israel and WHO to investigate the links between polio viruses detected in those two countries.
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