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J Med Microbiol 55 (2006), 759-763; DOI: 10.1099/jmm.0.46402-0
© 2006 Society for General Microbiology
ISSN 1473-5644

Seroprevalence of Mycoplasma pneumoniae in HIV-infected patients using a microparticle agglutination test

Esaki Muthu Shankar1, Nagalingeswaran Kumarasamy2, Pachamuthu Balakrishnan2, A. Vengatesan3, Hayath Kownhar1, Suniti Solomon2 and Usha Anand Rao1

1 ,2 Bacteriology Laboratory of the Departments of Microbiology1 , Dr ALM PG Institute of Basic Medical Sciences, and YRG CARE2 , VHS, University of Madras, Taramani, Chennai 600 11, India

3 Clinical Epidemiology Unit, Government Stanley Medical College and Hospital, Chennai 600 113, India

Correspondence
Usha Anand Rao
drushaanand{at}yahoo.com

Received 5 November 2005
Accepted 15 February 2006

Mycoplasma pneumoniae is increasingly recognized as a common and important pathogen in community settings, and is responsible for various pulmonary and extrapulmonary conditions in the normal population. However, the seroepidemiology of acute M. pneumoniae infection in HIV-infected individuals is still unclear worldwide. This study examined the seroprevalence of antibodies to M. pneumoniae in HIV-infected patients admitted with respiratory complaints at a tertiary AIDS care centre in Chennai, India. A commercial gelatin microparticle agglutination test (Serodia-Myco II, Fujirebio) was used for the determination of antibodies against M. pneumoniae in acute serum specimens. Of the 200 HIV-infected patients with underlying pulmonary conditions tested, 34 (17 % positivity; 95 % CI 12–23 %) had antibodies specific to M. pneumoniae, while among the 40 patients with no underlying pulmonary symptoms, five (12.5 % positivity; 95 % CI 4–27 %) had evidence of anti-M. pneumoniae antibody. This shows that the incidence of M. pneumoniae seropositivity is greater in patients with underlying pulmonary complaints. Most positive titres were found in the age group 28–37 years in the symptomatic and symptom-free groups (64.7 and 60 %, respectively). The positive titres ranged from 40 to >20 480. High titres (>=320) were found in 10 out of the 39 patients (25.6 %). This seroprevalence study reports a 16.2 % prevalence of M. pneumoniae infections in HIV-infected patients by a particle agglutination test.

Abbreviations: CI, confidence interval.




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