The concept of breakthrough is when a fully vaccinated person later gets an infection. It is important to remember that not everyone responds to vaccines equally.

Transverse myelitis is an inflammation of the spinal cord, a major part of the central nervous system. The spinal cord carries nerve signals to and from the brain through nerves that extend from each side of the spinal cord and connect to nerves elsewhere in the body

Upper GI endoscopy is a procedure in which a doctor uses an endoscope—a flexible tube with a camera—to see the lining of your upper GI tract.

Dysmenorrhea (menstrual cramp) is common among women. Usually starting anywhere from 1–2 years to 6–12 months after the first period and remaining until around 40 years of age,