Tanz, Robert R.;and the North American Streptococcal Pharyngitis Surveillance Group;Shulman, Stanford T.;and the North American Streptococcal Pharyngitis Surveillance Group;Shortridge, Virginia D.;and the North American Streptococcal Pharyngitis Surveillance Group;Kabat, William;and the North American Streptococcal Pharyngitis Surveillance Group;Kabat, Kathy;and the North American Streptococcal Pharyngitis Surveillance Group;Cederlund, Emily;and the North American Streptococcal Pharyngitis Surveillance Group;Rippe, Jason;and the North American Streptococcal Pharyngitis Surveillance Group;Beyer, Jill;and the North American Streptococcal Pharyngitis Surveillance Group;Doktor, Stella;and the North American Streptococcal Pharyngitis Surveillance Group;Beall, Bernard W.;and the North American Streptococcal Pharyngitis Surveillance Group;