Two years ago, the Irish government fixed a vulnerability in its national COVID-19 vaccination portal that exposed the vaccination records of around a million residents. But details of the ...

People in the United States can now order more free Covid-19 tests from the federal government as the country heads into respiratory virus season with high levels of the coronavirus already ...

Reports of respiratory illness have now reached "high" or "very high" levels across at least 16 state or big city health departments, the Centers for Disease Control and Prevention said, as trends of ...

A new COVID-19 variant is now estimated to make up about 20% of COVID-19 cases in the United States. The World Health Organization (WHO) recently named the strain, JN.1, a variant of concern – meaning ...

Feb. 7, 2026 New simulations reveal that both H1N1 and COVID-19 spread across U.S. cities in a matter of weeks, often before officials realized what was happening. Major travel hubs helped drive rapid ...

The COVID-19 virus can persist in the blood and tissue of patients for more than a year after the acute phase of the illness has ended, according to new research from UC San Francisco that offers ...

The Covid-19 pandemic has been perceived mainly as a dangerous acute outbreak of infection that killed more than a million people in the United States and 7 million worldwide. 1,2 However, in the ...