I think it's actually really hard to catch glandular fever. my friend had it in primary school and we weren't allowed to share a drink, but other than that we lived in each others pockets. Although who knows how informed those decisions were?! Isn't it called 'kissing disease'? In that you need to swap saliva to get it?!

I guess I'd ask the speech therapist and get advice from the dr. But my gut would be that it's ok as long as there is no coughing and drink sharing....