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New evidence confirms COVID-19 vaccines are overwhelmingly safe
(www.theglobeandmail.com)
This is a most excellent place for technology news and articles.
This is just what goes on in medicine science when things are operating properly. Test, collect data, run experiments, do it again, do it again, then, after the short term use has been proven safe 30 different times, by 100's of research groups, you start researching the long term affects of it.