Indeed, London is home to many French nationals, so many that https://www.bbc.co.uk/news/magazine-18234930 https://www.bbc.co.uk/news/magazine-18234930 So the

Indeed, London is home to many French nationals, so many that https://www.bbc.co.uk/news/magazine-18234930 https://www.bbc.co.uk/news/magazine-18234930 So the history of vacinations do become blurred. Actualy for France polio was still not eradicated as of 1988, not so in 2020 but how they count that and what the vaccine uptake was for the generations who have migrated is always going to be a factor. https://www.cdc.gov/polio/progress/index.htm https://www.cdc.gov/polio/progress/index.htm Then tourists - London does get a fair few as well, and as covid has shown, virus's dont' hang about.