US experts stress over safety of AZ's COVID-19 vaccine

US medical experts are reportedly concerned that a neurological side effect picked up in AstraZeneca’s closely-watched COVID-19 vaccine trial could compromise the whole project, as the FDA weighs whether to give the go ahead for US studies to resume. While tests of the vaccine co-developed with Oxford University have resumed in the UK, experts from the US National Institutes of Health have launched an investigation into the incident, which is still being kept under wraps by the UK pharma for patient confidentiality reasons. Side-effects that caused AstraZeneca to pause its coronavirus vaccine trial are unlikely to be caused by the shot according to documents posted online and cited in other press reports – but the FDA is yet to give the go ahead for US testing to restart.