How big are the blood-clot risks of the AstraZeneca jab?
How big are the blood-clot risks of the AstraZeneca jab? David Spiegelhalter and Anthony Masters © Provided by The Guardian Photograph: Heo Ran/Reuters Last Wednesday, the European Medicines Agency stated there was a plausible link between the Oxford/AstraZeneca (Vaxzevria) vaccine and rare types of blood clotting, which the MHRA estimates may happen in one in 100,000 young adults who get the vaccine. It is challenging to think of such low risks: when we have to count the zeros, all intuition goes. So what else has roughly a one in 100,000 chance for a young adult? We could...