Out of nine total infants, 4 infants reported to have fever, 2 infants had mild upper respiratory tract symptoms, 1 infant was asymptomatic, and 2 has missing symptom information.

Symptoms of Infants in China with COVID-19

University of Michigan - Ann Arbor

Studies have identified various trends in symptoms of COVID-19 patients by age groups 

Symptoms of COVID-19 by Age Groups

Symptoms of COVID-19 in Infants

For the patients between 3-13 month: 8 patients (80%) had fever, 6(60%) had cough, 4 (40%) had sore throat, 3 (30%) had stuffy nose, and 2(20%) had sneezing and rhinorrhea. None of the patients had diarrhea or dyspnea during the course of illness.
Fever resolved 24 h after fever onset with the peak of fever ranging from 37.7 °C to 39.2 °C.

Children's Symptomatic COVID-19 Infection

In one study, the symptoms of 81 "middle aged" adults, who were between 50 and 64 years old, were recorded as follows:
Fever: 63 patients (77.8%)
Cough: 37 patients (45.7%)
Dyspnea: 5 (6.2%)
Fatigue: 26 patients (32.1%)
Headache: 7 patients (8.6%)
Respiratory rate: 19.9 $\pm$ 3.5
Oxygen saturation: 93.3 $\pm$ 2.7

Maximum body temperature was:
- Below 37 degrees Celsius: 18 patients (22.2%)
- 37 or 38 degrees Celsius: 34 patients (42.0%)
- Above 38 degrees Celsius: 29 patients (35.8%)

Symptoms of COVID-19 in Middle Aged Adults Transferred by Beijing Emergency Medical Service

In one study, the symptoms of 60 "older patients," whose age was 65 and greater, had been recorded as:
Fever: 47 patients (78.3%)
Cough: 24 patients (56.7%)
Dyspnea: 18 patients (20.0%)
Fatigue: 14 patients (23.3%)
Headache: 4 patients (6.7%)
Respiratory rate: 22.5 $\pm$ 5.1
Oxygen saturation: 92.0 $\pm$ 6.4

Maximum body temperature was:
- Below 37 degrees Celsius: 13 patients (21.7%)
- 37 or 38 degrees Celsius: 24 patients (40.0%)
- Above 38 degrees Celsius: 23 patients (38.3%)

Symptoms of COVID-19 in Elderly transferred by Beijing Emergency Medical Services

This study included 82 participating hospitals involved in the existing Paediatric Tuberculosis Network European Trials Group (ptbnet) among 25 countries in Europe. The authors assessed 582 children and adolescents with severe COVID-19 between April 1-24, 2020. The authors found 3 risk factors to be attributed with ICU admission among children: being younger than 1 month old, male sex, pre-existing medical conditions, and presence of lower respiratory tract infection upon arrival and the hospital. Overall case fatality rate in the study was low (0.69) in comparison to studies on adult populations, suggesting that while severe COVID-19 cases occur in children, fatality is rare.

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