For the first time in nearly 40 years, health officials in the U.K. have identified a likely outbreak of polio in London.
So far, there have been no cases of polio detected directly in the U.K. But instead, scientists have discovered the outbreak through an indirect route. They’ve found multiple versions of the virus in sewage water, the U.K. Health Security Agency said Wednesday in a press release.
The risk to the general public is extremely low, the agency said, because the vast majority of people in Britain are vaccinated against polio during childhood – and therefore protected against infection.