Effectiveness of Covid-19 Vaccination Against Risk of Symptomatic Infection, Hospitalization, and Death Up to 9 Months: A Swedish Total-Population Cohort Study

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3949410

Findings: Protection from infection below 50% after 4 months. No protection measurable after 7 months (Pfizer). AstraZeneca wanes faster, even becomes NEGATIVE. 

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Four weeks after ending all restrictions, new COVID cases per capita are lower in Sweden than in ANY other European country.

https://twitter.com/MichaelPSenger/status/1453032470245302276?