Attack of the Killer Mozzies

What’s with the mosquitos around here lately? They are swarming onto anything warmblooded, biting like crazy.
Just last week, B got bitten on his arm; the two bites swelled up into golfball-sized lumps, so he went to the doctor. The doctor had half-a-dozen similar lumps of his own and had given up counting the number of patients he was seeing with severe mozzie bites. B cam home with some cream, which seemed to do the trick – the lumps disappeared in a couple of days.
Then yesterday, John-next-door came round, asking to borrow the cream – most of his hand was swollen with bites. Just now, his wife Pauline was round with the cream – it hadn’t worked and John’s hand had continued to swell. He’d been to the doctor last night and had sceptecaemia diagnosed. He’s now in bed and swallowing antibiotics like crazy.
And I’ve heard others complaining about mozzie bites – it seems this really is an unusual and severe outbreak. Climate change, anyone?