Which of the following organisms is a very common cause of ear infections and sinus infections?

A. Clostridium perfringens
B. Propionibacterium acnes
C. Staphylococcus aureus
D. Moraxella catarrhalis



Answer :

Final answer:

Moraxella catarrhalis is a common cause of ear and sinus infections.


Explanation:

Moraxella catarrhalis is a very common cause of ear infections and sinus infections. In cases of acute otitis media (AOM), bacteria such as Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis are typical causative agents. These bacteria can lead to chronic ear infections and sinus infections by colonizing and causing inflammation in the middle ear and sinus cavities.


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