The US Center for Disease Control (CDC) have provided a list of underlying medical conditions that increase the risk for severe illness from COVID-19. The list is based on published reports, articles in press, unreviewed pre-prints, and internal data available between December 1, 2019 and July 10, 2020. Severe illness from COVID-19 was defined as hospitalization, admission to the ICU, intubation or mechanical ventilation, or death.
This list is a living document that will be periodically updated by CDC, and it could rapidly change as the science evolves.
The level of evidence for each condition was determined by CDC reviewers based on available information about COVID-19. Conditions were added to the list (if not already on the previous underlying medical conditions list [originally released in March 2020]) if evidence for an association with severe illness from COVID-19 was met.
Revisions were made on July 17, 2020 to reflect recent data supporting increased risk of severe COVID-19 among individuals with cancer.
Are At Increased Risk
People of any age with the following conditions are at increased risk of severe illness from COVID-19:
- Chronic kidney disease
- COPD (chronic obstructive pulmonary disease)
- Immunocompromised state (weakened immune system) from solid organ transplant
- Obesity (body mass index [BMI] of 30 or higher)
- Serious heart conditions, such as heart failure, coronary artery disease, or cardiomyopathies
- Sickle cell disease
- Type 2 diabetes mellitus
Might Be At An Increased Risk
Based on what we know at this time, people with the following conditions might be at an increased risk for severe illness from COVID-19:
- Asthma (moderate-to-severe)
- Cerebrovascular disease (affects blood vessels and blood supply to the brain)
- Cystic fibrosis
- Hypertension or high blood pressure
- Immunocompromised state (weakened immune system) from blood or bone marrow transplant, immune deficiencies, HIV, use of corticosteroids, or use of other immune weakening medicines
- Neurologic conditions, such as dementia
- Liver disease
- Pulmonary fibrosis (having damaged or scarred lung tissues)
- Thalassemia (a type of blood disorder)
- Type 1 diabetes mellitus