@sakura7 I'm not sure we can really say older people aren't affected by weird blood clotting events post vaccination can we? many elderly people would have suffered strokes etc post vaccinations, casual or not, and it would just have been put down to age, poor health anyway etc and far, far less likely to have been reported on the yellow card system or equivalent system in other countries (where, incidentally, there have been multiple reports of yawning and sneezing as side effects of the AZ vaccine..) - people only report/notice unusual effects/deaths and this is unusual, albeit it extremely rare, in people under 55.
So under 55 effect more likely to be noticed/reported anyway than in older people (where it is much harder to find a vein anyway isn't it?) And/or those under 55s also had some health condition or auto-immune condition (known or unknown - many things don't show up til 30s/40s) which predisposed them to whatever effect the vaccine component is having, possibly only if injected into a blood vessel by mistake, whcih would explain the small numbers - i.e doesn't happen to all, most, half or even that many women under 55 who have had the AZ vaccine - few hundred world wide at most out of millions of vaccine dose given as of current reporting.
I also find it telling that most of the countries that have recommended the vaccine not be given to younger people now are setting the cut off at or around 55 - the age when most women are recommended to come off hormonal contraception or will be doing so anyway due to menopause. Makes me think the have some information to suggest any effect may be connected to blood vessels weekend/affected by artificial hormones? Out of the system or not present in older people, generally.