Bacteria and viruses are the most common causes of disease, but they have some key differences. Here's what you need to know.

DEAR DR. ROACH: I watched a show that described how a virus invades a cell and found it fascinating. What is the difference between a virus and a bacterial infection? -- G.D. ANSWER: Viral infections ...

Dear G.D.: Viral infections start by using a cell receptor to gain entry into the cell. This receptor depends on the virus; for example, SARS-CoV-2 (the virus that causes COVID) uses the ACE2 receptor ...

Bacteria and viruses are often lumped together as germs, and they share many characteristics. They’re invisible to the human eye. They’re everywhere. And both can make us sick, even kill us. That last ...

Bacterial and viral acute sinus infections typically display similar symptoms. The duration of the infection can help determine if it is viral or bacterial. Many viruses, such as the ones that cause ...

Viruses in human-made environments cause public health concerns, but they are generally less studied than bacteria. A recent study led by environmental scientists provided the first evidence of ...

The idea that a single-celled bacterium can defend itself against viruses in a similar way as the 1.8-trillion-cell human ...

Viruses in man-made environments cause public health concerns, but they are generally less studied than bacteria. A recent study led by environmental scientists from City University of Hong Kong ...

University of Toronto researchers have made the first discovery of a virus that infects Legionella pneumophila, the bacteria ...

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