Research paper on COVID. Link in comment.
Says 50% get diarrhea and it's an early symptom of covid than coughing. Coughing comes later. Rather itching throat is an earlier symptom, along with low fever and pain in muscle.
In another news China said, 75% of asymptomatic infected persons ultimately get symptoms.
Meanwhile I am waiting to hear a confirmation that recovered persons won't be infected a second time. It's still not confirmed yet. And indications go both ways.