CRP and Respiratory tract infection: As revealed in clinical trials in developed countries, only severe respiratory tract infections warrant antibiotic treatment.1,2 Clinical trials show that patients with lower CRP levels (<20 mg/l) were prescribed fewer antibiotics than those with higher CRP levels,1,2,18,19 assuring that all patients do not need antibiotics and the CRP cutoff points helped the health professionals to decrease the antibiotics prescribing.