Our sons were sick with the respiratory virus earlier in February. I've never seen them sick so long in their lives. Typically neither one misses any school, or at most, one day. This time they were down with fever for 5 days (7 year old) and 7 days (9 year old). Absentee rates were running from 25-40%, depending on the school and classroom. Except for the high fever (103) on the second day of the illness, they weren't all that sick; it just hung on, and on, and on. I'm glad I didn't hear about the fatalities before they got well; scary.
I'm glad your sons are doing better. :o)