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Case ReportOpen Access
Moraxella catarrhalis Pneumonia in an AIDS Patient: A Case Report
Cheepsattayakorn A 
,
Tharavichitakul P ,
Dettrairat S ,
Sutachai V
,
Tharavichitakul P ,
Dettrairat S ,
Sutachai V Moraxella catarrhalis pneumonia, although in the immunocompromised patients is very uncommon
for community-acquired pneumonia (CAP). It demonstrates a potential pathogen with high mortality when
the presence of heavy numbers of organisms, intracellularly and extracellularly, in the sputum Gram’s stained
smears confirmed by cultures.
In 2007, the authors reported a case of a 28-year-old Thai single male patient with acquired-immunodeficiency
syndrome (AIDS) and Moraxella catarrhalis pneumonia who dramatically responded to two weeks
of oral Amoxyclav (Amoxycillin trihydrate 500 milligrams + Clavulanic acid (Potassium clavulanate) 125
milligrams) treatment at 625 milligrams every 8 hours and then discharged. The present case report describes
clinical and initial chest roentgenographic presentations of Moraxella catarrhalis pneumonia in AIDS patient.
The importance of chest roentgenographic pictures, CD4/CD8-T lymphocyte ratio, sputum Gram’s stainings,
cultures with susceptibility testing in establishing a diagnosis, and protective vaccine are discussed.
Keywords: Moraxella catarrhalis, pneumonia, AIDS
for community-acquired pneumonia (CAP). It demonstrates a potential pathogen with high mortality when
the presence of heavy numbers of organisms, intracellularly and extracellularly, in the sputum Gram’s stained
smears confirmed by cultures.
In 2007, the authors reported a case of a 28-year-old Thai single male patient with acquired-immunodeficiency
syndrome (AIDS) and Moraxella catarrhalis pneumonia who dramatically responded to two weeks
of oral Amoxyclav (Amoxycillin trihydrate 500 milligrams + Clavulanic acid (Potassium clavulanate) 125
milligrams) treatment at 625 milligrams every 8 hours and then discharged. The present case report describes
clinical and initial chest roentgenographic presentations of Moraxella catarrhalis pneumonia in AIDS patient.
The importance of chest roentgenographic pictures, CD4/CD8-T lymphocyte ratio, sputum Gram’s stainings,
cultures with susceptibility testing in establishing a diagnosis, and protective vaccine are discussed.
Keywords: Moraxella catarrhalis, pneumonia, AIDS
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