Question: 1. Why does pneumonia cause the lung to appear opaque on a chest X-ray? 2. Why do smoking & asthma increase a persons risk for

1. Why does pneumonia cause the lung to appear opaque on a chest X-ray?

2. Why do smoking & asthma increase a person’s risk for developing pneumonia? 

3. COVID-19 infect the respiratory tract, how does it lead to pneumonia?

4. How does it lead to respiratory distress and why do patients need a ventilator?

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