Czech data shows that those who got the Moderna vaccine died more
The comorbidity index (DCCI) for the Pfizer v. Moderna groups was comparable (SMD around .05), but mortality was consistently higher for Moderna. The most likely explanation: Moderna was more deadly. Steve Kirsch Jul 25, 2026 Executive summary For the first time, I show the directly standardized survival curves for each 5 year age group in the Czech Republic using the publicly released record-level data . This data consistently shows the people who got the Moderna vaccine were much more likely to die than those of the same age who got the Pfizer shot. The relative risk (RR) was >1.5 for those under age 60 which is a huge difference. The comorbidity distribution for both groups of a given age range was very similar (SMD=.05) This isn’t because Pfizer is more protective of a COVID death because the differences were not specific to COVID periods (and were too large to be explained by effectiveness differences). There are two remaining explanations: The Moderna vaccine was more deadly T...