GAS antigens preferentially reacting against tic and pharyngitis sera.

Numeric values refer to % of positive sera of each class versus each antigen. Recognition percentages from No Tic sera were significantly lower (P<0.05) when compared to those obtained with either Tic or Pharyngitis sera, as established by using the two-tailed χ2 test. (a)Pharyngitis. (b)M5005 SPy number used since the protein, although present, was not annotated in SF370 M1 strain.