DD1 and I have been bitten. DH, DD2 haven't. BiteyCat hasn't shown any sign of scratching and I haven't seen any evidence on him (he's not keen on combing so I have to do small bits at a time before he runs off) but he did get his prescription flea treatment two weeks late this month. DD was first to have bites and I got mine yesterday after changing her bedding, which is why I think it's probably fleas. (First time in all my years of cat ownership, don't know how we've avoided it til now.)
Has the flea treatment not worked? It's a combined flea and wormer from the vet. Or do fleas decamp when their host is treated? Presumably I can't treat him again for a month even if it's not worked. Other than trying not to scratch what do we do to get rid? I've changed all bedding now, hoovered and ordered Indorex.