| prevalence of antibodies to yersinia enterocolitica o:3 among norwegian military recruits: association with risk factors and clinical manifestations. | igg antibody activity to yersinia enterocolitica serogroup o:3 was detected in sera from 56 (7.4%) of 755 norwegian military recruits, using an enzyme-linked immunosorbent assay. the highest prevalence was found among recruits from oslo city (12/56, 21.4%). the recruits answered a questionnaire which covered demographic data, specific exposures, and clinical information. the following risk factors were found to be independently associated with igg activity in logistic regression analysis: receiv ... | 1994 | 7672058 |
| levels of ochratoxin a in blood from norwegian and swedish blood donors and their possible correlation with food consumption. | blood levels of ochratoxin a were determined in 406 scandinavian blood donors (206 from oslo, norway, and 200 from visby on the island of gotland, sweden), using an hplc method. in connection with the blood collection, the subjects were asked to fill in a food questionnaire to obtain individual dietary information relevant to ochratoxin a exposure. the mean plasma level of ochratoxin a was 0.18 ng/ml in oslo and slightly higher, 0.21 ng/ml (p=0.046) in visby. there was no correlation between pla ... | 2001 | 11696389 |