Bangladesh J Med Microbiol 2014; 08 (02): 32-34
AbstractsThis cross sectional study was done from January 2009 to June 2010 in Microbiology department of Dhaka Medical College on isolation of potential pathogenic bacteria from nasopharynx from patients having cough for more than two weeks. The nasopharyngeal swabs were collected from 290 patients for culture and 101 blood samples were collected for slide agglutination test against anti-Bordetella antibody. In case of culture of nasopharyngeal swabs, 117 (73.12%) samples yielded growth of single organism, 16 (10%) yielded mixed growth and 27 (16.88%) samples yielded no growth in children. In adults, 85 (65.39%) samples yielded growth of single organism, 1 (0.77%) yielded mixed growth and 44 (33.84%) samples yielded no growth. Highest incidence (33.33%) of S. pneumoniae was found in age group of 1-5 years, highest incidence (32.20%) of N. meningitidis was found in age group of 18-25 years and highest incidence (32%) of Staph. aureus was found in age group of 25-50 years. One (0.63%) B. pertussis was isolated from a child and 5 (3.84%) B. parapertussis were isolated from adults. In this study, 116 (83.45%) samples yielded growth in lower socioeconomic group and 101 (70.62%) yielded growth in the samples of middle socioeconomic group. Among the study participants, 31(30.70%) were positive and 70 (69.30%) were negative for antibody against B. pertussis. In anti-Bordetella antibody positive cases, 14 (93.33%) children had duration of cough for 2-3 weeks, 7(43.75%) adults had duration of cough for 3-4 weeks and 1 (6.25%) adults had more than 6 weeks.
Pertussis or whooping cough, generally considered as the disease of infants and children, is an acute respiratory tract disease responsible for around 300,000 deaths annually. However, recent reports from many countries of the world clearly indicate that people of all age groups including adolescent and adults could be suffering from this disease. Pertussis remains an underestimated and under reported disease in adolescent and adults due to atypical symptoms in these age groups. Moreover, pertussis has been re-discovered as a frequent cause of prolonged cough in adolescents and adults in the recent past but the diagnosis still is often missed unless specific diagnostic tests are applied. The affected adolescents and adults act as reservoirs of the disease to the vulnerable population of infants. There have been increasing reports of pertussis outbreaks in adults population in many western countries and vaccination of this group is being planned. Additional booster doses of acellular pertussis vaccine may help to control and prevent pertussis.DOI: http://dx.doi.org/10.3329/bjmm.v5i1.15819 Bangladesh J Med Microbiol 2011; 05 (01): 31-34
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