The most common symptoms are fever, tiredness and dry cough, according to the WHO. Shortness of breath is also among the most common symptoms, according to the CDC. In most cases where symptoms present, those symptoms come together, Hotez said.
"Usually it presents with fever and cough, or fever, cough, and shortness of breath," he said. "It might present with one of those symptoms first, but then it rapidly progresses to the others."
Some patients also have aches and pains, nasal congestion, runny nose, sore throat or diarrhea. Some people do not have symptoms at all.
A New York neurosurgeon is warning people against looking out for fever as the first tell-tale symptom of the virus. His symptoms began with a little bit of congestion and only later progressed to a fever, body aches and chills.