Vaccine advisors from two regulatory groups in Europe today shared their latest investigation findings into blood clots in some AstraZeneca-Oxford COVID-19 vaccine recipients, with both finding a possible link.Experts from the European Medicines Agency (EMA) and the United Kingdom's Medicines and Healthcare Products Regulatory Agency (MHRA) both emphasized that the benefits of the vaccine continue to outweigh any risks.In a related development, the World Health Organization (WHO) vaccine safety group reviewed the latest information from the EMA, MHRA, and other countries and said the link is plausible but not confirmed, with more studies needed.The investigation into the possible side effects has complicated vaccine rollout in many