title: Lactose-positive Vibrio in seawater: a cause of pneumonia and septicemia in a drowning victim.
abstract: Lactose-positive Vibrio is a recently recognized marine organism that has pathogenic potential for humans. An organism was isolated from the sputum and blood of a man who was resuscitated after drowning in the sea. The isolates from both sources had the characteristics of lactose-positive Vibrio, which include positive oxidase, citrate, indole, and o-nitrophenyl-beta-D-galactopyranoside reactions and negative Voges-Proskauer, urease, and sucrose reactions. Seawater samples from 21 sites around Galveston Island were cultured for lactose-positive Vibrio over a period of 4 weeks, and 36% of the samples yielded the organism. The environmental isolates were very similar to the clinical isolates in biochemical reactions and susceptibility to antimicrobial agents. The results indicate that lactose-positive Vibrio is a common organism in the marine environment and that it should be considered in the diagnosis of infections, including pneumonia, associated with exposure to the sea.
mesh_terms: D000328:Adult; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001769:Blood / Q000382:microbiology; D004332:Drowning; D004352:Drug Resistance, Microbial; D006801:Humans; D007785:Lactose / Q000378:metabolism; D008297:Male; D011014:Pneumonia / Q000209:etiology*; D012623:Seawater; D018805:Sepsis / Q000209:etiology*; D013183:Sputum / Q000382:microbiology; D014733:Vibrio / Q000187:drug effects / Q000302:isolation & purification* / Q000378:metabolism; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents; D007785:Lactose