This reminds me, I should probably check if I should get vaccinated again for something.
In other science that people should really take more seriously, people really should wash their hands more.
Just try it. Make a habit of washing your hands when you come home, and every time you are about to cook or eat something, and most likely you will notice a difference in how often you get sick. And once you notice that, it's a habit that you won't stop.
(Especially if you have kids you really notice the difference.)
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