Welcome in H.C.M.
I have gone through your query regarding persistant sore throat
and you are taking antibiotic and antiallergic but no response is there, you C.T.Scan report is also normal but throat culture
is reported as having Staphylococcus aureus
Now you should take the antibiotic according to the sensitivity report, and you should take antibiotic with the cocent of your family doctor. Once the course of antibiotic get finished than repeat the culture again till it comes out sterile. This is the way to erradicate infection from throat.