It's easier than ever to test for sexually transmitted infections at home. We break down whether or not you should. Getting tested for sexually transmitted infections can feel complex, confusing, or ...

In an early animal test, a new nasal-spray vaccine has shown promise against a variety of germs and a common allergen, scientists report.

Easier than a blood test, saliva tests have the potential to detect cavities, infections and even cancer. But a lack of ...

While no test is 100% accurate, home tests are generally quick and painless. Though, false readings may happen, especially if the sample is lackluster. If you’re experiencing flu or COVID symptoms and ...

Sunbeams through the windows illuminate floating dust motes—and, imperceptibly, microdroplets of mucus carrying the measles virus, expelled from an infected but asymptomatic child who is hopping and ...