How do you deal with people - or respond to them - when they are swayed by the most unscientific opinion out there?
Spoke to someone I know this morning - early 40s, has her own underlying health problems, and is a carer for an older relative. She has had the first dose of the AZ about a month ago, no serious issues.
First thing she says is that she's very worried about this clotting thing and the AZ and is thinking that she won't go for her second jab when called. I say that as far as I knew the very very rare issue with clots was after the first dose only, and she should absolutely go and have the second dose. And that as soon as I get my appointment I'll be skipping in to get my first dose of whatever they offer me.
She then said :
my hairdresser told me that it's after the second jab you have to worry, not the first
and
Oxford University has taken their name off the AZ jab because they don't want to be associated with "all these deaths"
and
the same hairdresser's friend's uncle had the AZ vaccine and had to have half of his leg amputated because of a clot. 
Now this is someone who I chat to but wouldn't class as a friend. More of a work relationship. What I really wanted to do was laugh and tell her she was being spectacularly dim, and what medical qualifications her hairdresser had. But it's a real issue - people do believe things that other people tell them, the horror stories. And lots of people aren't that bright, are a bit scared about the whole vaccine/covid thing and latch on to stuff.
Typical MN response would probably to advise saying something really rude and abrupt, thus ruining the relationship entirely. But what DO you say??? I just kept reiterating that DH and I were happy to have ours and that she really ought to speak to her GP if she was worried.