Acute respiratory tract infections in Indian children with special reference to Mycoplasma pneumoniae
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Published on: February 23, 2014
A Pandey1, R Chaudhry, N Nisar
1Department of Microbiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi.
Insights
Mycoplasma pneumoniae is a significant cause of acute respiratory tract infections in Indian children. Early diagnosis using rapid methods is crucial for effective treatment of these common childhood infections.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Acute respiratory tract infections (ARTI) are a major cause of childhood illness globally.
- Identifying the specific microbial aetiology of ARTI is essential for appropriate treatment and management.
- Mycoplasma pneumoniae is a known pathogen implicated in respiratory infections, but its role in the Indian paediatric population required further investigation.
Purpose of the Study:
- To investigate the bacterial and Mycoplasma pneumoniae aetiology of acute respiratory tract infections in Indian children under 5 years of age.
- To evaluate the effectiveness of different diagnostic methods for Mycoplasma pneumoniae detection.
- To highlight the prevalence of mixed infections in paediatric ARTI.
Main Methods:
- A prospective study was conducted on 70 Indian children under 5 years old admitted with ARTI.
- Microbial investigations included bacterial cultures, Mycoplasma pneumoniae antigen detection (indirect immunofluorescence assay), and IgM antibody testing (particle agglutination test).
- Aerobic bacterial isolates were identified from blood samples.
Main Results:
- A microbial aetiology was identified in 62.8% of cases.
- Mycoplasma pneumoniae was the most common pathogen, identified in 30% of children.
- Aerobic bacteria, including Streptococcus pneumoniae and Staphylococcus aureus, were also isolated, and mixed infections were observed.
Conclusions:
- Mycoplasma pneumoniae plays a significant role in acute respiratory tract infections among Indian children.
- Rapid diagnostic techniques for Mycoplasma pneumoniae should be widely adopted for early diagnosis.
- The study underscores the importance of considering mixed aetiologies in paediatric ARTI for effective therapeutic strategies.
Abstract:
A total of 70 Indian children of either sex and under 5 years of age who were admitted to the All India Institute of Medical Sciences, New Delhi during a 1-year period (January 1994-December 1994) with complaints suggestive of acute respiratory tract infections (ARTI), were investigated for bacterial aetiology of infection with special reference to Mycoplasma pneumoniae. Microbial aetiology could be established in 44/70 (62.8 per cent) of cases of ARTI. Mycoplasma pneumoniae infection was seen in 21/70 (30 per cent), aerobic bacteria in 14/70 (20 per cent), Chlamydia pneumoniae in 2/70 (2.8 per cent), and mixed infection with mycoplasma either with bacteria and/or chlamydia in 7/70 (10 per cent). However, in 26/70 (37.1 per cent) cases no cause could be detected. Diagnosis of infection with M.pneumoniae was based on culture in 2/20 (10 per cent) cases, antigen detection in throat swab by indirect immunofluorescence assay using specific antibody in 16/70 (22.8 per cent) cases, and demonstration of IgM antibody in serum by serodia Myco II particle agglutination test in 17/70 (24.2 per cent). Streptococcus pneumoniae (9/70, 12.8 per cent) and Staphylococcus aureus (5/70, 7.1 per cent) were the aerobic isolates from blood in these patients. Results of this study indicate that M.pneumoniae plays a significant role in respiratory tract infection in an Indian paediatric population. Rapid diagnostic procedures, such as antigen detection and IgM antibody demonstration, should be used more widely to determine the infective aetiology early in the course of illness. The study also highlights the mixed aetiology in ARTI in children, which has important therapeutic implications.
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