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Researchers looking to modify some COVID-19 vaccines over blood clot riskJuly 13, 2021 -
What do we know about the Johnson & Johnson vaccine and blood clots?April 28, 2021 -
UK first country to authorize Pfizer COVID-19 vaccine for emergency useDecember 2, 2020 -
AstraZeneca COVID-19 vaccine trials called into question after technical mistake in studyNovember 28, 2020 -
AstraZeneca COVID-19 vaccine trials called into question after technical mistake in studyNovember 27, 2020
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AstraZeneca says its COVID-19 vaccine is up to 90% effectiveNovember 23, 2020 -
AstraZeneca says its COVID-19 vaccine is up to 90% effectiveNovember 23, 2020