Aeromonas sobria in chlorinated drinking water supplies
- 56 Downloads
Aeromonas species were recovered from over 27% of 183 chlorinated drinking water samples collected during an 18-month period. Sixteen of 20 isolates tested elicited a cytotoxic response by Y-1 mouse adrenal cells. None of the strains was either enterotoxigenic by the rabbit ligated ileal loop assay, exhibited piliation, or showed significant mannose resistant adherence to human buccal cells. TheAeromonas isolates were further identified to beA. sobria and were resistant to ampicillin and susceptible to chloramphenicol, kanamycin, streptomycin, and tetracycline. Total coliform levels did not correlate withAeromonas densities in distribution water. With 85% of the samplings,Aeromonas occurred in distribution water when no coliforms were detectable by either the membrane filter or most-probable-number techniques. A significant correlation (P<.001) existed between standard plate count levels andAeromonas.
Unable to display preview. Download preview PDF.
- 1.American Public Health Association (1975) Standard methods for the examination of water and wastewater, 14th ed. American Public Health Association, New YorkGoogle Scholar
- 5.Clark JA (1980) The influence of increasing numbers of nonindicator organisms upon the detection of indicator organisms by the membrane filter and presence-absence tests. Can J Microbiol 26:827–832Google Scholar
- 9.Davis WA II, Kane JC, Garagusi VF (1978) HumanAeromonas infections. A review of the literature and a case report of endocarditis. Med 57:267–277Google Scholar
- 12.Fliermans CB, Groden RW, Hazen TC, Esch GW (1977)Aeromonas distribution and survival in a thermally altered lake. Appl Environ Microbiol 33:112–114Google Scholar
- 19.Lennette EH, Spaulding EH, Truant JP (eds) (1974) Manual of clinical microbiology, 2nd ed. American Society for Microbiology. Washington, DCGoogle Scholar
- 20.Ljungh Å, Wretlind B, Wadstrom T (1978) Evidence for enterotoxin and two cytolytic toxins in human isolates ofAeromonas hydrophila. In: Rosenberg P (ed) Proc 5th Int Sympos Toxins: Animal, Plant and Microbial. Pergamon Press, New York, pp 947–960Google Scholar
- 21.Lupo L, Strickland E, Dufour A, Cabelli V (1977) The effect of oxidase positive bacteria on total coliform density estimates. Health Lab Sci 2:117–121Google Scholar
- 27.Taylor RH, Geldreich EE (1979) A new membrane filter procedure for bacterial counts in potable water and swimming pool samples. J Am Water Works Assoc 71:402–406Google Scholar