A visual argument for vaccines, in five tweets:

1/ A ward of polio victims, incarcerated inside "iron lungs" in 1950s America. Many are children, their lungs paralysed, unable to breathe unaided. Thanks to vaccination, no-one has caught polio in the UK since the 1980s. pic.twitter.com/KCqAmRETMy

— Rachel Clarke (@doctor_oxford) May 14, 2019