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YDS PARAGRAF DOLDURMA / TEST 1 27. Soru

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27.

The channels of spread of infection are from
person to person, either through direct
contact, or via the medium of water, food or
materials. ...... . This is, however, not as easy
in the case of food, drink and public water
supplies, which involve schemes of sanitary
engineering and control of the sale of food.

Spread of infection by droplet spray from the
nose and throat can be prevented through
cleanliness when coughing and sneezing

It must be remembered that germs live in
people and cannot survive any length of
time outside people

Every member of the community should
regard it as a social duty not to spread
infection, and this always requires
fastidiousness and may involve
inconvenience

Strict measures of environmental control are
the only weapon against the spread of
infection

Today the human race represents a bigger
threat to its own security than do the
infectious diseases