Question

acute bronchitis is usually a ____ infection that has led to a secondary ____ infection.
o parasitic; bacterial
o bacterial; viral
o fungal; bacterial
o viral; bacterial
o viral; fungal

Explanation:

Acute bronchitis is commonly initiated by a viral infection (such as those from the influenza virus, rhinovirus, etc.). When the airways are damaged or the immune system is compromised due to the initial viral attack, bacteria (e.g., Haemophilus influenzae, Streptococcus pneumoniae) can then infect the already - irritated bronchial tubes as a secondary infection. Parasitic, bacterial - first (as in option 2), fungal - first (as in option 3), and viral - fungal (as in option 5) combinations are not the typical pathogen sequences for acute bronchitis.

Answer:

viral; bacterial