Treatment 1. Antibiotics should be given in full dosage Penicillin is the drug of choice for empirical selection, except when the patient is sensitive to this drug. In any case, antibiotic sensitivity studies are important When sensitivity to penicillin is known to exist erythromycin, or broad-spectrum antibiotics may be usedTreatment  1.Antibiotics should be given in full dosage. Penicillin is the drug of choice for empirical selection, except when the patient is sensitive to this drug. In any case, antibiotic sensitivity studies are important. When sensitivity to penicillin is known to exist, erythromycin, or broad-spectrum antibiotics may be used