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if there is no fever
and patient is improving clinically that is more important then widal
report , it may take almost 2 weeks to improve completely. Appropriate Antibiotics must be used for at least 10 days.
A decreasing titre is indirect sign of improvement ,but this test is used less and less as results are quite variable.
One should take care of potable water and hygenic food to avoid infection.
is also available for this disease,if suitable may be taken under supervision of Physician.
Good luck .