Long COVID occurs when symptoms—new, continuing, or recurrent—arise four or more weeks after the initial coronavirus infection.
COVID-19 is the disease caused by the SARS-CoV-2, the 2019 novel coronavirus.
Vaccines aren’t just for kids. Thousands of adults go to the hospital each year for a serious (sometimes even deadly) disease they might have avoided if they had received the vaccination to prevent it.
ARDS is a potentially fatal form of respiratory failure characterized by low blood oxygen levels. Learn about symptoms and treatment.
MIS-C is an inflammatory syndrome that affects children and is associated with COVID-19.
A brain injury is a disruption in the function of the brain when an outside force makes it rock back and forth. Learn about symptoms and treatment.
A common virus that often spreads during the wintertime, the flu can become a serious condition, especially for the elderly.
When the sense of smell is lost or compromised—a condition called anosmia—it is not just enjoyment of life that is affected but also health and safety.
Pulse oximetry is a noninvasive method of measuring the saturation of oxygen in a person's blood.
Everyone gets some headaches. “Headache disorder” refers to recurrent head pain, usually with other symptoms like nausea and sensitivity to light or noise.