In recent decades, thanks to the continuous discovery and development of antibiotics, the incidence and mortality rates of diseases caused by bacterial infections have fallen significantly.
Clarithromycin is a semisynthetic 14-membered ring macrolide antibiotic used to treat a wide range of mild to moderate bacterial infections (e.g., pharyngitis, tonsillitis, respiratory tract infections, and uncomplicated skin infections).
If you have gone through life avoiding certain antibiotics because you think you're allergic to penicillin, you'd probably want to know if you're not actually allergic.