The Netherlands and Ireland joint the list of countries that have temporarily stopped using the AstraZeneca-Oxford COVID-19 vaccine, as World Health Organization (WHO) experts review the findings.Meanwhile, AstraZeneca yesterday said there is no evidence supporting a link between the vaccine and thrombotic (clotting) or bleeding events.WHO, EMA probes continueThe pauses are leading to delays in rolling out the vaccine, compounding already slow progress in some countries—a worry, given the rapid spread of more transmissible SARS-CoV-2 variants.In announcing the pause yesterday, Dutch officials, who had earlier said there is no reason to pause vaccination, said they couldn't allow any doubts about the vaccine, though there is no proof of a