Reply from Dr. Anil Kumar Sanwal is satisfactory. I have taken sample with due care and done the culture more than 7 times to reconfirm. In every case the growth appears. Can it be still skin contamination ? It never happens in urine culture and shows sterile after overnight incubation. Linezolid tab even for two weeks cannot cure the infection. Now I am taking LINID 600mg I.V. injection twice a day.