I agree there is no absolute safety anywhere from a highly contagious virus or bacteria.If millions of people get hospital acquired infections and nearly 100k die per year in the U.S. there is no way you could keep the workplace clean
But hospitals went to hell when they stopped cleaning with bleach.
Read an article a few years ago about a big hospital in NYC that hired a doctor as head of infection control (probably because they absolutely had to do something, IMO). He brought back cleaning with bleach, talking about how effective it was and that's what he remembered growing up when the kitchen was cleaned.
You can never keep any workplace perfectly clean but I think a lot of places could do a better job.