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Their advice changes substantially every few weeks. Know whose never changes?
The only consistent and good advice is to wash your hands, but twenty seconds isn’t what I call a good hand wash.

I’ve always used 30 seconds as my rule, and I scrub thoroughly.

I long for the day when carrying a tissue and coughing or sneezing into it, or into my shoulder or my chest will once again be the practice. I really think that the mask wearing is making people more untrusting and unkind toward each other. I’m tired of people being suspicious of each other. It’s not a good thing.

The only consistent and good advice is to wash your hands, but twenty seconds isn’t what I call a good hand wash.

The TV show Mythbusters inadvertently proved that it is.

They were testing the myth on which is more sanitary in a public restroom, paper towels or a hand dryer? They built two mock-up bathrooms, one with a towel dispenser and one with a blow dryer. They lined up 200 volunteers and sprayed all of their hands with an inert bacteria. They had half wash with soap and water for 20 seconds in the towel restroom and had the rest do so in the room with the blower. Then they swabbed various locations in the rooms and took cultures.

The first test TOTALLY FAILED because 20 seconds with soap and water kills 95% of anything growing on your hands. They could not get anything growing in their cultures. They had to redo the entire experiment with a water rinse only.

Round Two proved paper towels to be infinitely better. Since an air dryer can not be hot enough to kill germs or it would scald you, all it manages to do is to blow the germs around and distribute them evenly throughout the room.