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Re: Polio found in London Sewage Samples
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Originally Posted by nomadking
Well somebody must have been not vaccinated and infectious for them to have infected others.
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Like it said in the OP's link?
Quote:
People infected with polio, or who have been vaccinated with a live version of the virus, shed traces of the virus in their stool – which eventually end up in sewage wastewater. So the current hypothesis is that an infected person brought the virus into London and then spread it to others who weren't immunized.
"It sounds like the outbreak is very small," says virologist Angela Rasmussen, who studies polio at the University of Saskatchewan in Canada. "The outbreak could be within an extended family. Transmission would require a concentration of people who had not yet been vaccinated."
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