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Bacterial aetiology and outcome in children with severe pneumonia in Uganda
R Nantanda1, H Hildenwall, S Peterson
1Department of Paediatrics & Child Health, Makerere University Medical School, Kampala, Uganda. rnantanda@yahoo.com
Insights
Severe pneumonia in Ugandan children is often caused by Staphylococcus aureus, Streptococcus pneumoniae, and Haemophilus influenzae. Antibiotic resistance is a growing concern, impacting treatment outcomes for this vulnerable population.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Pneumonia is a leading cause of death in children under five globally and in Uganda.
- Increasing antibiotic resistance poses a significant threat to managing childhood pneumonia.
Purpose of the Study:
- To investigate the bacterial causes of severe pneumonia in children aged 2-59 months.
- To determine antimicrobial susceptibility patterns and treatment outcomes.
- To identify risk factors for mortality in severe pediatric pneumonia cases in Uganda.
Main Methods:
- Prospective study of 157 children with severe pneumonia at Mulago Hospital, Uganda.
- Collection of blood and sputum for bacterial culture and analysis.
- Clinical classification of pneumonia severity and 7-day follow-up for outcomes.
Main Results:
- Staphylococcus aureus and Streptococcus pneumoniae were the most common causes of bacteremia.
- Streptococcus pneumoniae, Haemophilus influenzae, and Klebsiella species were frequently isolated from sputum.
- High resistance rates were observed for Staphylococcus aureus and Haemophilus influenzae against common antibiotics, while Streptococcus pneumoniae remained sensitive to chloramphenicol.
Conclusions:
- Key bacterial pathogens include S. aureus, S. pneumoniae, and H. influenzae.
- Current first-line antibiotic chloramphenicol shows variable efficacy due to emerging resistance.
- Severe malnutrition, hypoxemia, and very severe pneumonia are critical predictors of mortality.
Background:
Pneumonia is a major cause of morbidity and mortality in the 'under-5s' and in Uganda accounts for 10-30% of childhood deaths. Antibiotic resistance is increasing.
Objective:
To describe the bacterial aetiology, antimicrobial sensitivity and outcome of severe pneumonia among children aged 2-59 months admitted to the Acute Care Unit, Mulago Hospital, Uganda.
Methods:
A total of 157 children aged 2-59 months with symptoms of severe pneumonia according to WHO guidelines were recruited over a 4-month period in 2005/2006. Blood and induced sputum were obtained for culture, and chest radiographs were undertaken. Children were clinically classified as having severe or very severe pneumonia and were followed up for a maximum of 7 days.
Results:
Bacteraemia was detected in 15.9% of patients with Staphylococcus aureus (36%) and Streptococcus pneumoniae (28%) were the organisms most commonly isolated. Bacteria were isolated from sputum in half of the children, the commonest organisms being Streptococcus pneumoniae (45.9%), Haemophilus influenzae (23.5%) and Klebsiella species (22.4%). Staphylococcus aureus had only 33.3% sensitivity to chloramphenicol and H. influenzae isolates were completely resistant. S. pneumoniae was sensitive to chloramphenicol in 87.4% of cases. The case fatality rate was 15.5%. Independent predictors of death were very severe pneumonia (OR 12.9, CI 2.5-65.8), hypoxaemia (SaO(2) <92%, OR 4.9, CI 1.2-19.5) and severe malnutrition (OR 16.5, CI 4.2-65.5).
Conclusion:
S. aureus, S. pneumoniae and H. influenzae are common bacterial causes of severe pneumonia. Chloramphenicol, the current first-line antibiotic for treating severe pneumonia in Ugandan children, is useful in pneumonia caused by S. pneumoniae but other common bacteria show resistance. The presence of severe malnutrition, hypoxaemia and very severe pneumonia increase the risk of death and should be considered in case management protocols.
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