Vaccines train the body's defenses to fight infections safely. Learn how vaccines work, how the immune system responds, and ...

Learn about the massive recall of atorvastatin, the most prescribed cholesterol-lowering drug in the US, and find out what you need to do if you are affected.

Long COVID is a heterogeneous clinical condition that affects thousands of people and can manifest in many different ways.

Ribonucleic acid (RNA) is one of life's most versatile molecules, with roles going far beyond being a messenger of genetic ...