Even individuals who did not become seriously ill with COVID-19 may have developed a weakened immune system that could lead ...

According to WHO, approximately 6% of the worldwide population who contract COVID-19—some 400 million people—go on to develop ...

Iran war, it is necessary to consider not only what it will mean for the whole region but also its own ties with each neighbour ...

A 4th dose of the bivalent or monovalent Omicron BA.1-adapted BNT162b2 vaccine elicits robust neutralizing responses in adults aged 18 to 55.

People hospitalised with severe COVID-19 had a 24 per cent higher risk ...

Unexpected chilblains, unusual rashes, and flareups of existing conditions— Katharine Lang asks experts how the skin can react to covid infection “Covid toes”—swollen and itchy red or purple toes, or ...

A major clinical trial has delivered an unexpected twist in the search for ways to fight COVID-19 and its lingering effects. Researchers at Mass General Brigham found that taking high doses of vitamin ...

An analysis of 76 million people found that those who had been ill with Covid were at greater risk of developing one cancer ...

Those who have contracted Covid could be at an increased risk of lung cancer, scientists have found. The research indicates ...

For the second week in a row, 11 US children died of influenza, and while flu activity remains elevated across the country, ...

What's changed, and what hasn't, since President Donald Trump declared the U.S. emergency on March 13, 2020. At the time, nearly 2,000 Americans were infected with the virus. But at-home covid tests ...