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Section 1 Question 7:
Improperly washed hands are the cause of most cases of food poisoning in the food industry and of cross-infection in hospitals. An Australian study has shown that hands that are well washed but wet can transmit as many as 60 000 micro-organisms on contact, whereas similarly washed hands that have been thoroughly dried with a paper towel transmit a mere 200.
This information indicates that
A just washing hands has little effect on reducing the number of micro-organisms that hands carry.
B at least washing hands is a better method of preventing the transfer of disease than not washing hands at all and keeping them dry all the time.
C moisture greatly assists in the transfer of micro-organisms from one site to another.
D as long as hands are thoroughly dried, there is little risk of transferring micro-organisms from them to another site.
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