Diseases, Conditions, Syndromes

No sign latest COVID variant leads to worse symptoms

JN.1, the COVID variant sweeping the country this winter, is not prompting more severe disease than earlier variants did, early U.S. government data suggests.

Diseases, Conditions, Syndromes

How long does immunity last after a COVID infection?

Nearly four years into the pandemic, Australia, like many other countries, is still seeing large numbers of COVID cases. Some 860,221 infections were recorded around the country in 2023, while 30,283 cases have already been ...

Surgery

Video: Advances in knee replacement surgery

An aging population drives the global demand for knee replacement surgery, exceeding 1 million procedures annually. In the U.S. alone, the need for knee replacements is projected to grow by 673%, reaching approximately 3.48 ...

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