The point is that there are hundreds of thousands of low information people out there. When a loved one comes down with what looks like the flu do you seriously believe that nobody in the family is going to touch that person? That they're going to wear a hazmat suit whenever they're around them? They're not going to touch the soiled bedsheets and clothes? Seriously?
“Honey - she only has the flu. If we take her to the hospital they’ll want to quarantine the house until they get the tests back. If I don’t make it to work for three days I’m going to lose my job, and we’ve got bills to pay. Let’s just see if it runs it’s course.”
And that level of thinking applies to all levels of people. Substitute “lose my job” to “seal that $2 million deal”.