17.6% of cases were classified as severe cases, while 82.4% of cases were considered mild.
Of the mild cases, 73.3% were strictly considered mild, 4.2% were classified as non-pneumonia cases, and 5% were asymptomatic cases. Severe:mild case ratio was 1:4


Distribution of COVID-19 severity in Characteristics of COVID-19 Infection in Beijing

- Of 391 cases, 102 (26%) displayed mild symptoms, 254 (65%) presented with moderate symptoms, and 35 (9%) were categorized as displaying severe symptoms.
- Males had significantly higher odds of presenting with severe symptoms (odds ratio (OR) 2.5 [95% CI: 1.1-6.1]), and individuals between ages 60-69 were at an increased risk (OR 3.4 [95% CI: 1.4-9.5])

Distribution of COVID-19 severity in Characteristics of COVID-19 Infection in Shenzhen, China

University of Michigan - Ann Arbor

1. Mild

2.  Moderate

3. Severe

4. Critical

The Severity of  COVID-19 Symptoms

- Respiratory Failure
- Shock
- Multiorgan Failure
- Greatly diminished level of consciousness (e.g., severe delirium, minimally conscious state, stupor, coma)
- Symptoms of severe COVID-19

Critical COVID-19 symptoms

Depending on exact symptoms and overall health, hospitalization may or may not be needed.
- High-grade temperature
- Shortness of breath or trouble breathing
- Radiologic signs of pneumonia
- Chills
- Profound fatigue
- "Brain fog"
- Mild/Moderate dehydration

Moderate COVID-19 symptoms

1- Subjective or low-grade fever
2- Dry cough
3- Myalgias and arthralgias
4- Nasal congestion
5- Headache
6- Sore throat

Mild COVID-19 symptoms

Severe COVID-19 is a medical emergency and requires immediate hospitalization.

1. Severe dyspnea

2. Hypoxia

3. Serious dehydration

4. P/F ration < 300

5. New bilateral infiltrated on imaging

6. Altered level of consciousness (e.g., confusion, delirium, lethargy)*

*If this symptom is present, emergency medical attention should be sought right away, even if other symptoms are absent. Often times, this is the only severe symptom and can be present even when other "classic" COVID symptoms are absent. Even if this doesn't indicate COVID infection, it should still be treated as a medical emergency.


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