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.
The head of the World Health Organization (WHO) today warned that rising COVID-19 cases are creating a volatile situation, posing the most risk for countries with low vaccination coverage.
The United States is one of the countries with rising cases, with hospitalizations now showing a small increase, according to the latest data.
... research shows antibodies obtained from vaccination or infection gradually wane over time, and each new omicron subvariant, though still a part of the larger omicron family tree, is slightly different from the last, meaning a person's ability to fight off infections from the virus can shift.
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