This sounds right. I have 2 little kids in school. They stop it if anything seems off. Send everyone home. You only have 20 mins to get your kid. Thank God for Grandparents. Neither class, or the school, has missed a day since it started beginning of Sept. None of the teachers have been out either. And they are around a hundred little snotty germ bags all day. And most of them have siblings. With after school sports, music lessons, Spanish lessons… No one is getting sick. So something is working out for society.