There are many

There are many sites in the multisite network that have been deleted. This is very worrisome to us as our teachers have been creating and adding to these websites all year and have a lot of information on them. Do you have any idea what might have happened?

They are subsets on a multisite network and I do not believe they have not backed up in any way.

http://blog.cisb.com.cn/dhalgrenattwell/
http://blog.cisb.com.cn/josephcreelman/
http://blog.cisb.com.cn/msameliza/
http://blog.cisb.com.cn/msmackenzie/
http://blog.cisb.com.cn/jessohanley/

Thanks