Todd Hewitt HiVeg™ Broth is recommended for cultivation of group A haemolytic Streptococci used for serological studies. This medium is also recommended for selective isolation of group B streptococci with added gentamicin and nalidixic acid. It is an alternative type in epidemiologic studies of group A streptococci as well as pathogenic microorganisms. With the addition of 15 g/l agar, the medium can be solidified and used as an excellent substrate for the production of capsules in streptococci. Todd Hewitt HiVeg™ Broth is prepared by using vegetable peptones in place of animal based peptones which make the media free of BSE/TSE risks.
1. Todd E. W. and Hewitt L. F., 1932, J. Pathol. Bacteriol., 35:973. 2.Updyke E. L. and Nickle M. I., 1954, Appl. Microbiol., 2:117. 3.Forbes B. A., Sahm D. F. and Weissfeld A. S., 1998, Bailey & Scotts Diagnostic Microbiology, 10th Ed., Mosby, Inc., St.Louis,Mo.