The connection between rare blood clots and vector vaccines

There are ongoing questions about the safety of AstraZeneca and Johnson & Johnson’s COVID-19 vaccines, after the shots were linked to rare but serious blood clots. As Crystal Goomansingh explains, German researchers believe they know what’s causing the potentially deadly side effect, and also how it can be prevented.

• Ontario researchers find how some COVID-19 vaccines can trigger blood clots
• Don’t use heparin to treat COVID-19 vaccine-induced blood clots, EMA warns
• Rare COVID-19 blood clots tied to cold viruses, German scientists say