TOKYO: Face shields alone are not highly effective to prevent Covid-19 infection without masks, says a new study which assessed what happens to the airflow around these plastic screens when someone nearby sneezes. The research, published in the journal Physics Of Fluid, noted that the number of people using face […]

Brazilian health authority Anvisa said on Wednesday that a volunteer in a clinical trial of the COVID-19 vaccine developed by AstraZeneca and Oxford University has died, stating it had received data from an investigation into the matter. The regulator said testing of the vaccine would continue after the volunteer’s death. […]

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