All the above comments have missed the point that this is omicron. Absolutely NO NEED to close schools. I'm still astounded at how many Thais (prettty much 100% where I am) are still wearing masks. I had it about 6 wks ago. Not real good for a day with a massive headache and muscle and joint pains (no fever), a lot better the next day and by day 3 (day zero being the day you first have symptoms and test positive) had no symptoms apart from tiredness but still testing positive. There is as far as I can tell absolutely no scientific evidence that would support this MORONIC suggestion.