Example sentences of "[be] [vb pp] for several months " in BNC.

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1 This is usually about 18 days after infection , but it may be delayed for several months when arrested larval development occurs .
2 Antibiotics are also prescribed for acne treatment and need to be given for several months at a time to be effective .
3 It is advisable for children to be given inactivated polio vaccine as the live vaccine contains polio virus which may be shed for several months after being taken .
4 It is advisable for children to be given inactivated polio vaccine as the live vaccine contains the polio virus which may be shed for several months after being taken .
5 The public inquiry is expected to last a week , but a final decision wo n't be taken for several months .
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