Five years ago, on March 11, 2020, the World Health Organization declared COVID-19 a pandemic. Whether it still is depends on who you ask. There are no clear criteria to mark the end of a pandemic, ...

During the fall of 2019, in a lab in Wuhan, China, a cluster of atoms weighing less than one-trillionth of a gram mutated ever so slightly, cascading into the greatest disruption to human life in over ...

In the late winter and early spring of 2020, the coronavirus pandemic grew from a geographically limited viral infection into a full-blown national emergency, disrupting life as we knew it. The ...

Yearly Covid-19 Booster Recommendations in Canada, Europe, and Australia. Although the rapid development of multiple Covid-19 vaccines in 2020 represents a major scientific, medical, and regulatory ...

For many, COVID-19 has faded into a recent memory. Even for hospitals, healthcare providers, and clinical staff, the way we view the virus has evolved since 2020. Yet, the lessons learned should not ...

Five years after the World Health Organization declared COVID-19 a pandemic, public health experts say that, despite some gains, the United States is not fully prepared for another public health ...