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 ...

Scientists have uncovered a surprising viral shortcut that turns moving cells into delivery vehicles for infection. Instead of spreading one virus at a time, infected cells bundle viral material into ...

Lurking among them is a “giant” virus, a genetic behemoth that blurs the line between the living and the inanimate. When this ...

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 ...

Human immunodeficiency virus (HIV) is a germ that causes a lifelong infection that slowly weakens the immune system. Though the infection is lifelong, medicines can keep the virus in check and help ...

You wake up with a scratchy throat and that vague feeling of unwellness. Is it just allergies? The start of a cold? Or something that might need antibiotics? Knowing the difference between viral and ...