| microbiological quality and safety of ready-to-eat street-vended foods in johannesburg, south africa. | fifty-one ready-to-eat street foods, 18 dishwater, and 18 surface swab samples were collected from six vendors in johannesburg, south africa. food temperatures were recorded at the time of sampling. standard methods were used to determine aerobic plate counts (apcs), spore counts (scs), and enterobacteriaceae counts (ecs) for food samples as well as coliform counts (ccs) for water and swab samples. in addition, petrifilm escherichia coli count (pc) plates were used for the enumeration of colifor ... | 1999 | 10571317 |
| vibrio cholerae o1 outbreak isolates in mozambique and south africa in 1998 are multiple-drug resistant, contain the sxt element and the aada2 gene located on class 1 integrons. | the characteristics of vibrio cholerae o1 biotype el tor, serotype ogawa isolates from outbreaks of cholera in 1998 amongst migrant workers in the south african provinces of gauteng and mpumalanga, on the border of mozambique, are reported. the isolates seem to have originated from the same clone since they are of two closely related bgli ribotypes. these ribotypes had a high similarity to ribotypes of v. cholerae o1 recently found in three south-east asian countries. isolates were resistant to ... | 2001 | 11733467 |
| quantitative microbial risk assessment (qmra) shows increased public health risk associated with exposure to river water under conditions of riverbed sediment resuspension. | although higher microbial concentrations have been reported in sediments than in the overlying water column, most quantitative microbial risk assessment (qmra) studies have not clearly indicated the contribution of sediment-borne pathogens to estimated risks. thus, the present study aimed at determining the public health risk associated with exposure to pathogenic bacteria in polluted river water under undisturbed conditions and conditions of sediment resuspension in the apies river, gauteng, so ... | 2016 | 27297265 |