Commentary Following 20 million AstraZeneca jabs so far administered in the UK there have been 79 blood clot cases recorded, from which 19 deaths have occurred. The UK government’s Medicines and Healthcare Products Regulatory Agency (MHRA) concludes that roughly one in 100,000 young adults are likely to develop these types of blood clots after taking the AstraZeneca vaccine. An article in The Guardian, co-authored by David Spiegelhalter, chair of the Winton Centre for Risk and Evidence Communication at Cambridge University, and Anthony Masters of the Royal Statistical Society, calls this a “tolerable risk” compared to the vaccine’s benefits. It compares the chances of dying from the vaccine to the risk of dying under general anaesthesia, or on a skydiving jump, or winning the UK Lotto jackpot if you bought 450 tickets, or guessing the last five digits of someone’s mobile phone number. However, those fatality numbers were not just two digits but 19 …