Detection rates of polio in sewage is on the rise in the UK and the US has seen several cases even though it's been eradicated for 20 years. So what is polio and why is it appearing now?
If you've been looking at the news recently, you might have seen that there have been strains of polio found in samples taken at several London treatment works and the virus has been detected in 8 London boroughs{{OnLondon: Why has polio been spreading in London in 2022?}}.
There have also been traces found in several US cities, along with some cases -at least one causing paralysis.
This is concerning as Polio can cause extreme illness in young children and those with weakened immune syste…
