Table 2. Duration of shedding of different strains of S. pyogenes (7×108 cfu per 5 µl dose) in 8 week old male BALB/c mice after intranasal infection.
Number of mice shedding S. pyogenes | |||
Day 1 | Day 2 | Day 3 | |
emm 1 | 0/7 | 0/7 | 0/7 |
emm 2 | 1/7 | 1/7 | 1/7 |
emm75 | 4/7 | 3/7 | 2/7 |
emm 81 | 1/7 | 0/7 | 0/7 |