Is it true that … you have five seconds’ grace after dropping food on the floor? | Health & wellbeing
You drop a piece of cucumber on the floor. Do you immediately throw it in the bin or reassure yourself of the age-old “five-second rule” and reckon it’s fine to pop it in your mouth after a quick rinse? If you fall into the latter camp, John Tregoning, professor of vaccine immunology at Imperial College London, has…
