Key Takeaways COVID-19 cases are rising in 25 U.S. statesThey're up especially in the South and WestAnother virus called ...

What is R-naught for the COVID-19 virus and why it's a key metric for re-opening plans. The concept is crucial to curbing the novel coronavirus.

Scientists have identified dozens of human proteins that SARS-CoV-2, the virus that causes COVID-19, depends on to replicate ...

The claim: COVID-19 is bacterial, not viral, and can be easily treated with aspirin. A long post claiming COVID-19 is not, in fact, caused by a virus but, instead, by a bacterium has gone viral ...

Like many viruses, the COVID-19 virus probably passed from animals to humans in some way, although it hasn’t yet been scientifically shown, NBC News reports.

Compared with the very first sequences of the virus that causes Covid-19, it has 58 changes to amino acids in its spike protein, according to Dr. Jesse Bloom, who studies the molecular structure ...

While there is no hard evidence that the COVID-19 virus was developed in a lab, the Wuhan lab did use reverse genetics on bat coronaviruses, which some scientists believe fits the definition of ...

COVID-19 is a disease caused by the virus known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Bacteria and viruses can create similar symptoms and spread through human-to-human ...

The virus that causes COVID-19 was a novel coronavirus, meaning it had never infected humans. The virus was discovered in Wuhan, China, in 2019 and spread rapidly around the globe.

Researchers pointed to the 2003 SARS outbreak, which was caused by a close cousin of the virus that causes COVID-19 and eventually traced back to a single population of horseshoe crab bats.

The Nipah virus is not related to COVID-19, but may have the same originating source — bats. The host of the virus is fruit bats, also known as flying foxes because of their large size.