Opioid use disorder is a chronic brain disease characterized by continuing opioid use despite harmful consequences. Learn about symptoms and treatment.
COVID-19 is the disease caused by the SARS-CoV-2, the 2019 novel coronavirus.
Long COVID refers to new or recurring symptoms that occur four or more weeks after an infection with SARS-CoV-2, the virus that causes COVID-19.
Coronavirus is a term describes a family of viruses, common in both animals and humans.
A disease caused by infection with the monkeypox virus that causes rash and flu-like symptoms.
Vaccines activate the immune system, training it to fight off certain viral and bacterial infections.