Covid-19 cases are surging yet again in the United States, but unlike previous waves, a substantial rise in hospitalizations and deaths isn't following yet.
The global organisations that buy Covid vaccines for poorer countries "need to step up" and order doses from Africa's only Covid vaccine maker in order to save the production line, the company's senior executive told the BBC.
More than half of patients hospitalized for COVID-19 in Wuhan, China, during the initial outbreak reported at least one symptom a couple of years later, researchers found.
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