So happy to hear your daughter is doing better!!We actually don't know. She was sick in March, and at the time her condition was thought to be an exacerbation of her heart condition. Nobody was thinking of covid at the time. It wasn't until we moved and saw a different Dr that he brought up the possibility of Covid. However it had been so long, 7 months, that he didn't think the antibodies would still show up. Any virus can rarely cause long term issues, so it could have been anything. But she is definitely getting better!

