Bacterias have different mechanisms to cause disease in our body. Its not easy to conclude diagnosis based only on one or two factors. It needs detail history of symptoms, physical signs and various investigations.
Yes, overall, high TLC indicates bacterial infection but there are exceptions too.
In case of typhoid bacteria, it engulfs some kinds of leukocytes so there is decrease in their numbers.
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Its good to ask your doubts to doctor. but simultaneously asking google regarding it..is not a good idea.
And every case is different, so statement about one case, you can not apply to other case.