4. Have they been attended by a man recently from such a country and
whose clothes have not been sterilized?
5. Have they been carried on any imperfectly disinfected car or ship
which has carried the cattle of such country?
6. Has the affection attacked a considerable proportion of the herd at
the same time? A rare thing with lung plague.
7. Has the attack come on slowly and insidiously? Very characteristic of
lung plague.