Isolation and identification of Legionella pneumophila from drinking water in Basra governorate, Iraq

This study in Iraq investigated the occurrence of Legionella. Pneumophila in different drinking-water sources in Basra governorate as well as the susceptibility of isolates to several antibiotics. A total of 222 water samples were collected in 2008-2009: 49 samples from water purification plants [at entry points, from precipitation tanks, from filtration tanks and at exit points], 127 samples of tap water; and 46 samples from tankers and plants supplying water by reverse osmosis. The findings confirmed the presence of L. pneumophila in sources of crude water, in general drinking water supplies and drinking water tankers. Of 258 isolates 77.1% were serotype 1 and 22.9% serotypes 2-15. All examined isolates displayed drug resistance, particularly to ampicillin, but were 100% susceptible to doxycycline. The prevalence of L. pneumophila, especially serogroup 1, is a strong indicator of unsuitability of drinking water and requires appropriate action

Isolation and identification of Mycobacterium avium complex and other nontuberculosis mycobacteria from drinking-water in Basra governorate, Iraq

This study aimed to determine the occurrence of Mycobocterium avium complex and other nontuberculous mycobacteria in drinking-water in Basra governorate, Iraq and their susceptibility to several antibiotics and the effect of 0.5 mg/L of chlorine on their survival. A total of 404 samples of drinking-water were collected from 33 different districts of the governorate from November 2006 to August 2007. Filtered samples were incubated for 7 days or less in a monophasic-biphasic culture setup of tuberculosis broth and Lowenstein-jensen agar. The 252 isolates were identified as M avium complex [21], M. marinum [15], M. kansasii [30], M. simiae [20], M. szulgai [19], M. xenopi [16], M. malmoense [11], M.fortuitum [37], M. chelonae [50] and M. abscessus [33]. Isolates were tested for antibiotic susceptibility as well as their ability to tolerate chlorine at a concentration of 0.5 mg/L The presence of these pathogenic bacteria in drinking-water renders the water unfit for human consumption

Isolation and identification of Helicobacter pylori from drinking water in Basra governorate, Iraq

The mode of the transmission of Helicobacter pylori infection remains poorly understood. A total of 198 samples of drinking water from 22 districts of Basra governorate were collected during the period October 2006 to July 2007. The concentration of residual chlorine was measured and the numbers of total and faecal coliforms were counted. On modified Columbia urea agar, 469 bacterial cultures were obtained, of which 173 isolates were identified. Only 14 isolates were Helicobacter spp., of which 10 were H. pylori [2.0% of the total isolates]. These isolates were tested for antibiotic susceptibility as well as ability to tolerate chlorine at 0.5 mg/L. To our knowledge, this is the first report of the occurrence of H. pylori in treated municipal drinking water