Coronavirus Questions Answered: What We Know About COVID-19 | Time
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NIH on Twitter: "#COPD is a chronic lung disease that makes breathing difficult. It can cause coughing that produces large amounts of mucus, wheezing, shortness of breath, chest tightness, and other symptoms.
cough: Do you have a stubborn cough that isn't going? It may be 'seasonal' bronchitis - The Economic Times
Pneumonia and Coronavirus: Relationship, Causes & Symptoms | Health Plus
I'm coughing a lot. Is it bronchitis? | OSF HealthCare
Dry coughs, wet coughs, mucus: Everything you need to know about coughs and phlegm - National | Globalnews.ca
Bronchitis vs. pneumonia: How to tell
Bronchitis: When To Take It Seriously
Blood in sputum: Causes, diagnosis, and when to see a doctor