My dd aged 4 had glandular fever about a year ago, it really took it out of her and it took a long time to regain her energy levels back. Over the last 3 weeks she seems to have picked up every bug going. This week nursery commented on how lethargic she had been, she came home with what I thought was slapped cheek. She has deteriorated over the weekend and now has a very sore throatand has been very lethargic. So what I am asking in a very long winded way is can glandular fever come back or am I putting 2 and 2 together and getting five.