A member asked:

Can anyone tell me what causes respiratory infection in humans?

A doctor has provided 1 answer

Viruses: Viruses are the #1 cause. Bacteria can also cause respiratory infections. Rarely there are parasites and fungi that can infect the lungs as well.

Answered 3/13/2020

4k views

Thank

Related Questions

A member asked:

Does upper respiratory tract infection usually cause many symptoms?

A doctor has provided 1 answer

A member asked:

What are the causes of recurrent respiratory infections?

A doctor has provided 1 answer

A member asked:

Can viruses cause lower respiratory tract infections?

2 doctors weighed in across 2 answers

A member asked:

What are some upper respiratory tract infections caused by viruses?

A doctor has provided 1 answer