Bill Sullivan

If you've handled cat litter or eaten raw meat or unwashed produce, there’s a chance you might have a permanent toxoplasmosis infection spread throughout your body.

By Bill Sullivan Published 15 June 25

Sometimes bacteria lurking in people's guts can get them drunk, even if they don't consume any alcohol.

By Bill Sullivan Published 5 May 24

Opinion The digestive power of this amoeba is the stuff of nightmares when it plays out in a human brain.

By Bill Sullivan Published 2 August 19