| occurrence of multiple antibiotic resistance and r-plasmids in gram-negative bacteria isolated from faecally contaminated fresh-water streams in hong kong. | the bacterial populations of six freshwater streams in populated areas of the hong kong new territories were studied. there is considerable faecal contamination of these streams, with coliform counts as high as 10(5) c.f.u./ml and the contaminating organisms show a high prevalence of antibiotic resistance and multiple resistance. with direct plating of water samples onto antibiotic-containing media, an average of 49% of the gram-negative bacteria were ampicillin-resistant, 3% chloramphenicol-res ... | 1987 | 3595747 |