The bug seems to be a 'quick-recovery-sick-once-and-that's-it' type, which is obviously good news.
Mr Wall and his staff have ensured the area is clean (which did not involve any sort of fumigation), and we are reinforcing hygiene at every possible opportunity.
Please remember not to send your child into school until 48 after any vomiting. Even though the bug does not seem to have any lingering effects, it is important that you follow these guidelines to minimise any further outbreak.
Many thanks for all of your support.