Rotavirus infection in calves in Bangladesh |
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| Authors: | S A Selim K M S Aziz A J Sarker H Rahman |
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| Institution: | (1) International Centre for Diarrhoeal Diseases Research, Bangladesh (ICDDR,B), Mohakhali, 1212 Dhaka, Bangladesh;(2) Department of Microbiology and Hygiene, Bangladesh Agricultural University, Mymensingh, Bangladesh;(3) Institute of Post Graduate Medicine and Research, Shahbag, Dhaka, Bangladesh;(4) Department of Epidemiology and Preventive Medicine, School of Veterinary Medicine, University of California, 95616 Davis, CA, USA |
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| Abstract: | Faecal samples from 434 calves under 1 year of age (307 diarrhoeal and 127 normal) were collected from three dairy farms and one village in selected areas of Bangladesh. The samples were tested by an enzyme-linked immunosorbent assay (ELISA) to detect the presence of rotavirus antigen. Of 402 dairy calves tested, 28 (7.0%) were positive, of which 21 (7.2%) were from diarrhoeic calves and 7 (6.3%) from non-diarrhoeic calves. Rotavirus infection varied from farm to farm (2.7–9.2%) and there was no positive response from any of the 32 village calves. Rotavirus was most commonly found in calves of 1 week of age or less (up to 22.2% in one group) but was not found in any calves later than 6 months of age. More than 80% of rotavirus-positive samples from diarrhoeic calves exhibited a titre of 128 or more (geometric mean 345±4.5), whereas non-diarrhoeal calves had titres less than or equal to 128 (geometric mean=29±1.9), suggesting that rotavirus infection in calves in Bangladesh was mostly associated with diarrhoea. |
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| Keywords: | Bangladesh calves ELISA prevalence rotavirus serology |
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