Case definition category | Case definition | Criteria |
---|---|---|
Existing COVID-19 case definitions | U.S. Centers for Disease Control and Prevention (CDC) COVID-19-like illness (CLI)a | Fever, cough, or shortness of breath |
CDC symptom listb | Fever or chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting, diarrhea | |
U.S. Council of State and Territorial Epidemiologists (CSTE) COVID-19 original clinical criteria (CSTE combination 1)c | At least one of the following: cough, shortness of breath, or discomfort breathing, OR at least two of the following: fever, chills, rigors, myalgia, headache, sore throat, new olfactory disorder and taste disorders | |
CSTE COVID-19 revised clinical criteria (CSTE combination 2)d | At least one of the following: cough, shortness of breath, discomfort breathing, new olfactory disorder, new taste disorder, or at least two of the following: fever, chills, rigors, myalgia, headache, sore throat, nausea or vomiting, diarrhea, fatigue, congestion or runny nose | |
Existing respiratory illness surveillance case definitions | Influenza-like illness (ILI)e | Fever AND cough and/or sore throat |
World Health Organization (WHO) acute respiratory infection (ARI) definition for community-based respiratory syncytial virus (RSV) surveillancef | At least one of the following: shortness of breath or cough, sore throat, or coryza | |
Derived compound symptom combinationsg | Derived compound combination 1 | Taste and/or smell dysfunction, OR one of the following: shortness of breath, myalgia, or fever or chills |
Derived compound combination 2 | Taste and/or smell dysfunction or discomfort breathing, OR at least two of the following: shortness of breath, wheezing, or fever or chills | |
Derived compound combination 3 | Taste and/or smell dysfunction, OR at least two of the following: shortness of breath, wheezing, discomfort breathing, or fever or chills | |
Derived compound combination 4 | Taste and/or smell dysfunction, OR shortness of breath and fever or chills |