How Long Is COVID-19 Contagious? Topic Guide

How Long Is COVID-19 Contagious? How Long Is COVID-19 Contagious?: COVID-19 (coronavirus disease) can be contagious for weeks or longer, depending on the patient. The time from infection to the start of symptoms (incubation) ranges from four days to two weeks, though patients are contagious before symptoms develop. Follow CDC guidelines for self-quarantining if you have a coronavirus infection.

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How Long Is COVID-19 Contagious? Topic Guide - Medications and Vitamins


remdesivir Remdesivir

Remdesivir is used to treat people with coronavirus disease 2019 (COVID-19) who are in a hospital...learn more »

interferon beta-1a Interferon Beta-1a

Interferon beta-1a is used to treat relapsing forms of multiple sclerosis in adults (including clinically isolated syndrome, relapsing-remitting disease, and...learn more »

interferon alfa-2b Interferon Alfa-2b

Interferon alfa-2b is used to treat hairy cell leukemia, malignant melanoma, follicular lymphoma, Kaposi's sarcoma caused by AIDS, and certain types of genit...learn more »

prednisone Prednisone

Prednisone is a steroid that reduces inflammation in the body, and also suppresses your immune system...learn more »

dexamethasone (injection) Dexamethasone (injection)

Dexamethasone is a steroid that prevents the release of substances in the body that cause inflammation...learn more »