Eksempler på blueberry

• The high contamination rate we found among blueberries (3/6 samples) may reflect the fact that our sampling procedure was not random.

• A hypothesis that blueberries were the source of illness was tested by a case-control study.

• Sanitary audit of the orchard revealed multiple opportunities for contamination of blueberries by pickers.

• No cases were reported to us by these countries as being associated with blueberry consumption.

• In the meantime, as discussed above, the valued concept of a geological approach will remain our solution to the ' blueberry-field ' thought experiment.

• Cases whose interviews had led to the formulation of the blueberry hypothesis were included in the study but were not informed of the study hypothesis.

• Inquiry about food exposures revealed no dining premises common to a number of cases but suggested consumption of blueberries as a common risk factor.

• In response to the outbreak some wholesalers of blueberries have adopted an approved supplier policy whereby only product from producers with approved food safety programmes will be marketed.