WHO backs AstraZeneca COVID vaccine amid clotting concerns; green lights Johnson & Johnson shots Published on March 15, 2021 COVID-19/Public Health 1092 views The UN World Health Organization (WHO) said on Friday that it was aware of blood clot concerns linked to “a specific batch” of AstraZeneca/Oxford COVID-19 vaccine, but maintained that to date, no-one has died from any coronavirus vaccine. More