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Prevalence of Campylobacter jejuni and enteric bacterial pathogens among hospitalized HIV infected versus non-HIV infected patients with diarrhoea in southern India

A prevalence study on Campylobacter jejuni and other enteric bacterial pathogens was carried out in 200 HIV infected and 200 non-HIV infected subjects with diarrhoeal symptoms at an AIDS Hospital in southern India. Diarrhoeal specimens were inoculated onto standard culture media as well as onto Columbia and Campylobacter blood agar media for C. jejuni isolation. All the C. jejuni isolates were tested for antimicrobial susceptibility using Kirby-Bauer's method. A significant difference in recovery rates was observed between the 2 groups in relation to C. jejuni (p≤0.02; 95% CI 5.5 (1–10) and Shigella spp. (p≤0.02; 95% CI 6.5 (1–12). 21 isolates of Shigella spp., 16 C. jejuni, 5 Salmonella typhi, 3 Arcobacter spp., 3 Yersinia enterocolitica, and 2 Aeromonas hydrophila were recovered from the HIV infected cases. All the C. jejuni isolates were sensitive to ciprofloxacin whereas 1 strain was resistant to nalidixic acid. Interestingly, all the 29 Shigella spp. (21 from HIV and 8 from non-HIV cases) were resistant to erythromycin and most were resistant to many other antibiotics used. Our observations underline the need for epidemiological investigations to screen C. jejuni and Shigella spp. in HIV infected subjects with diarrhoea and analyse their antibiograms periodically to minimize disease burden in HIV/AIDS.