At first low fever in between 98 to 99.8 widal o&h titres 1:40,after 5 days widal o&h 1:160,but fever pattern is same morning after 9am increases to 99 and afternoon goes to 99.8 evening it becomes normal,will thypoid cause this kind of low grade fever in between 98 to 99.8 ,now it almost 2 mnths everyday suffering from low fever thyroid normal,chest x-ray normal,us abdomen normal,blood culture negative,widal igg&igm negative,crp 6 ,esr 10,scrub thypus negative,RF assay negative,appetite is good ,will this is because of thypoid or what will thypoid cause low fever in between 99 to 99.8 ,pls give explanation