Streptococcus Laboratory General Methods

For beta-hemolytic streptococci other than group A, a 30 ml THB can also be inoculated and placed at 35ΕC for 18 to 24 h. Some strains may take more than one day of incubation, no harm is done by incubating these broths longer than 24 to 72 h. The 30 ml THB is used for serogrouping and serotyping in some cases. 4. ................
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