Which bacterium is found in 2-16% of acute sinusitis cases?

Which bacterium is found in 2-16% of acute sinusitis cases?

• A. Streptococcus pyogenes
• B. Moraxella catarrhalis
• C. Staphylococcus aureus
• D. Haemophilus influenzae

Answer: (B)

Moraxella catarrhalis is indeed found in a significant proportion of acute sinusitis cases, specifically in about 2-16% of instances. This bacterium is known for its role in respiratory tract infections, particularly in children and adults with acute sinusitis and otitis media. The presence of Moraxella catarrhalis is notable because it is one of the common pathogens contributing to these conditions, especially when secondary infections follow a viral upper respiratory infection. In the context of acute sinusitis, Moraxella catarrhalis is an important pathogen to consider, especially given that it is often associated with other bacterial infections. This organism can produce β-lactamase, which contributes to antibiotic resistance, making it relevant in clinical management when treating sinusitis. While other bacteria, such as Streptococcus pyogenes, Staphylococcus aureus, and Haemophilus influenzae, can also be implicated in sinusitis, they do not fall within the same prevalence range for this specific condition according to general microbiological data associated with acute sinusitis. For instance, Haemophilus influenzae, although significant, is more commonly encountered in cases of chronic sinusitis or in specific patient populations. Recognizing Moraxella cat

Moraxella catarrhalis is indeed found in a significant proportion of acute sinusitis cases, specifically in about 2-16% of instances. This bacterium is known for its role in respiratory tract infections, particularly in children and adults with acute sinusitis and otitis media. The presence of Moraxella catarrhalis is notable because it is one of the common pathogens contributing to these conditions, especially when secondary infections follow a viral upper respiratory infection.

In the context of acute sinusitis, Moraxella catarrhalis is an important pathogen to consider, especially given that it is often associated with other bacterial infections. This organism can produce β-lactamase, which contributes to antibiotic resistance, making it relevant in clinical management when treating sinusitis.

While other bacteria, such as Streptococcus pyogenes, Staphylococcus aureus, and Haemophilus influenzae, can also be implicated in sinusitis, they do not fall within the same prevalence range for this specific condition according to general microbiological data associated with acute sinusitis. For instance, Haemophilus influenzae, although significant, is more commonly encountered in cases of chronic sinusitis or in specific patient populations. Recognizing Moraxella cat