How much resistance of strep throat to zithromax is there in california now? I heard it varies a lot all over the world.

Strep. There has never been a group a streptococcus grown from a person that has been resistant to penicillin. Azithromycin is one of the most widely studied antibiotics for the treatment of group a beta-hemolytic streptococcus infections. Azithromycin has the advantage of simple and short dosing regimen. I am not aware of resistance of strep to zithro.