Thrombotic Thrombocytopenia after ChAdOx1 nCov-19 Vaccination
https://www.nejm.org/doi/full/10.1056/NEJMoa2104840
Includes micro-blood-clots, also related to D-Dimer tests and many other problems such as Myocarditis, Neurological Problems, etc.
https://www.nejm.org/doi/full/10.1056/NEJMoa2104840
https://www.bbc.com/news/uk-wales-56764182
https://www.dailymail.co.uk/news/article-9498191/The-three-warning-signs-blood-clot-Covid-vaccination-expert-says-look-for.html
https://www.marketwatch.com/story/blood-clots-as-prevalent-with-pfizer-and-moderna-vaccine-as-with-astrazenecas-report-2021-04-15
Draper teenager hospitalized with blood clots after COVID-19 vaccine shot
https://www.nbcnews.com/health/health-news/johnson-johnson-vaccine-linked-28-cases-blood-clots-cdc-reports-n1267128
https://www.pbs.org/newshour/health/why-would-a-covid-vaccine-cause-rare-blood-clots-researchers-have-found-clues
People with rare blood clots after a COVID-19 jab share an uncommon immune response
https://www.healthdirect.gov.au/blog/covid-19-vaccines-thrombocytopenia-and-blood-clots