New study from Switzerland. Some good news and bad news in terms of seroprevalence and what it means for schooling.
Let's start with the good. The infection rate in 5-9 yr olds is very small. Doesn't look to be an issue at all in that age category - that's great news compared to something like the flu.
the bad news is the infection rate in 10-19 yr olds is almost the same as the infection rate in 20-49 yr olds. So while they have lower odds of being seriously ill as older age groups they are just as likely to be infected and contagious.
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31304-0/fulltext
So that to me is good news for the elementary schools. as long as there is not a significant outbreak in the community then it is likely they should be able to be in person.
It's less good news for middle and HS students as it suggests if there is any community spread going on that they have the potential to become incubators. Will likely have to be more careful with MS/HS and will need community spread to be lower for those to be safe.
I still think it is going to be all about strong metrics and really being willful in using those metrics. If things improve to where it is safe to have kids, teachers and staff in schools you have them in schools. If things flare up then you close the school down until it gets better. This is also one reason I think the pod idea might be a really useful one. If you keep kids at all levels in pods you could potentially keep more schools open and only have pods of kids and teachers out if you can catch the outbreaks fast enough.
NY released their state level plan for re-opening schools today, I like it alot. Very systematic. Very measurable.
students, teachers and staff have to be six feet apart. If that is not possible they have to wear masks.
In order to open the percentage of positive tests in a region has to be below 5% for 14 days. If the positve test rate exceeds 9% over a 7 day period schools will have to close.
Once a school closes it stays closed until 14 days of positive tests below 5%.
I like it because it is very measurable. You don't just say, 'yeah I think we are good lets get everyone in classes, or things are getting worse close everything done'. Strong metrics to follow and use.
IMO not following guidelines largely put us where we are now, this type of guideline allows you to do things in a way that minimizes the downside risk. Very German in its design.