(1/3) Study of the #COVID19 outbreak on the USS Theodore Roosevelt aircraft carrier, with follow-up of outcomes. 736 sailors with a median age of 25 years were infected. 20% were asymptomatic, 1% were hospitalised, and 0.1% died.
https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2771116">https://jamanetwork.com/journals/...

(2/3) The most common symptoms were cold-like symptoms, including blocked or runny nose (53%), cough (45%), loss of smell (37%), headache (34%), loss of taste (31%), and sore throat (27%). Only 8% had a fever.

(3/3) The authors noted that #COVID19 is not readily distinguishable from other respiratory illnesses. Additionally, the high proportion of asymptomatic infection further limits the usefulness of symptom screening. Testing is critical to identify cases.