There are multiple definitions:
universitair medisch centrum(Dutch)
underlying medical condition(English)
- includes chronic cardiovascular diseases (CCD), chronic metabolic diseases, chronic respiratory diseases (CRD), chronic liver disease, coronary heart disease, and rheumatic diseases. Emerging and re-emerging infectious diseases constitute a continuing threat to human health. Among them, the influenza A virus causes severe disease in humans and poses an unprecedented pandemic threat, seriously affected by those conditions.
- CCD, CRD, CHD, CLD, CMD
- Virology, Vaccination, Epidemiology, Risk factor, Prognosis
- https://doi.org…47/TCRM.S173834