Daniel M. Musher, Richard J. Hamill, Charles E. Wright, Jill E. Clarridge, and Carol M. Ashton
Figure. The bars show the number of isolates of Streptococcus pyogenes (GAS) each month at the VAMC, Houston. The upper line connecting solid squares indicates the running monthly average (average of the preceding 12 months). The lower line connecting solid circles indicates the number of blood cultures positive for S. pyogenes during each 6-month period.