We ask our science correspondent Derrick Williams We ask our science correspondent Derrick Williams how long vaccines offer protection.
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How many people have been vaccinated? Which vaccines are approved? Here's the global progress on vaccination against SARS-CoV-2, the virus that causes COVID-19.
The German pharma company cited "the unprecedented context of at least 13 variants" in explaining why its vaccine fell short of expectations in an interim analysis.
The German biotech company has had a dream run since its market debut in August as investors bet on its mRNA platform. But the firm's fortunes seem to be turning after its COVID-19 vaccine showed disappointing efficacy.
The good summer weather and strong vaccination numbers can obscure the dangers that the coronavirus still poses. Public health officials in Germany want to avoid a repeat of the false sense of security in summer 2020.
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