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Mycoplasma pneumoniae infections in Australian children
1Department of Virology and Microbiology, The Children's Hospital at Westmead, New South Wales, Australia.
Insights
Mycoplasma pneumoniae infections present differently in young children, with cough and fever being common. This study highlights thrombocytosis as a notable finding in pediatric cases.
Area of Science:
- Pediatric Infectious Diseases
- Respiratory Infections
- Microbiology
Background:
- Mycoplasma pneumoniae is a common cause of respiratory illness in children.
- Understanding its epidemiology and clinical presentation is crucial for timely diagnosis and management.
Purpose of the Study:
- To investigate the epidemiology, clinical characteristics, and outcomes of Mycoplasma pneumoniae infections in children.
- To identify age-specific differences in presentation and associated findings.
Main Methods:
- Retrospective review of serologically diagnosed Mycoplasma pneumoniae infections over 63 months.
- Analysis of patient demographics, clinical symptoms, treatment response, and laboratory findings.
Main Results:
- 76 children diagnosed with M. pneumoniae infection, with the 5-9 year age group most affected.
- Cough and fever were the most common symptoms; younger children (<5 years) showed more severe symptoms like tachypnoea and recession.
- Thrombocytosis was observed in 41.4% of cases, a finding not previously reported in pediatric M. pneumoniae infections.
Conclusions:
- Clinical features of Mycoplasma pneumoniae infection vary significantly between children under 5 and those aged 5-9 years.
- Thrombocytosis is a potential, previously unreported, hematological finding in pediatric M. pneumoniae infections.
Objectives:
To describe the epidemiology, clinical features and outcome of Mycoplasma pneumoniae infection in children presenting to a tertiary children's hospital.
Methods:
Sixty-three month retrospective review of serologically diagnosed M. pneumoniae infections.
Results:
There were 76 children, 42 boys and 34 girls, mean age 6.3 +/- 3.5 years. The age group most commonly affected was 5-9 years, followed by children 1-5 years. More than half of the patients had failed to respond to antibiotics before referral. The commonest presentation was with cough and fever. Coryza, diarrhoea, vomiting, tachypnoea and recession were significantly more common in children less than 5 years than in children 5-15 years. Hospitalized patients were more likely than non-hospitalized patients to have respiratory distress with recession and wheeze. Radiographic findings were non-specific. Thrombocytosis was found in 29 (41.4%) of 70 children studied.
Conclusion:
The clinical features of M. pneumoniae infection were different in children less than 5 years than in children aged 5-9 years. The presence of thrombocytosis in 40% of the cases has not previously been reported in children.
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