- The disease starts with flu-like often Do symptoms, headache, dry cough, fever, muscle aches and fatigue. When the disease progresses, difficulty in breathing có Patients cough expectorant and cough out or white. Occurs khi pneumonia pathogens the body's protective barrier Overcome and invades the Respiratory tract. 
Influenza-like symptoms, headache, dry cough, fever, muscle aches and fatigue.
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