Corona Virus Disease 2019 (COVID-19) is a new illness caused by a novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Symptoms are variable but typically include fever, cough, respiratory symptoms, diarrhea, reduction of smell and taste sensation. Severity ranges from mild to severe and the virus may lead to pneumonia, acute respiratory distress syndrome and death, in some patients. Nearly every country in the world has been affected by this virus and is currently defined as a pandemic, by the World Health Organization. There are no known proven therapies for treating this virus and no vaccine to prevent the infection at this time.

No data currently exist on how COVID-19 affects people with myasthenia gravis (MG)/LEMS or patients with other diseases on immunosuppressive therapies. However, because most patients with MG are on immunosuppressive or immunomodulatory therapies and may also have respiratory muscle weakness, there is a theoreticla concern that MG/LEMS patients may be at higher risk of contracting the infection or experiencing severe manifestations of COVID-19.