The Food Standards Agency said that although it was still relatively rare to find salmonella in salad it could be caused by cross-contamination at processing plants.
In all cases cross-contamination of cell types was less than 16%.
If wound fluid is allowed to stagnate, microorganisms may thrive and cause cross-contamination between patients.
Changes in laboratory techniques were designed to minimize the possibility of cross-contamination during batch processing.
If laboratory cross-contamination or administrative errors occur, this would lead to an overestimate of the proportion of recurrences attributed to reinfection.
Great care was exercised to avoid cross-contamination of pots.
Adequate care was taken to prevent cross-contamination of materials among specimens.
Her death fuelled fears of cross-contamination , where envelopes touch anthrax-laced packages and become infected.
A further 18% said they would find the crops acceptable only if there was no risk of cross-contamination .
cross-contamination between raw and cooked food is the cause of most infection