Table 1. Frequency of Transmission Events Between Mice by Genotype.
| Index Case | Recipient | Frequency of Transmission | 95% Confidence Interval |
| HeJ | HeJ | 88% | 74–99% |
| HeN | HeN | 6.7% | 0.0–19% |
| C57BL6J | C57BL6J | 0.0% | NA |
| μMt | μMt | 11% | 4–18% |
| TCRβδ−/− | TCRβδ−/− | 0.0% | NA |
| Rag−/− | Rag −/− | 0.0% | NA |
| HeJ | HeN | 13% | 1–26% |
| HeN | HeJ | 53% | 32–74% |
The observed proportion 95% confidence interval for the frequency with which of secondary mice of secondary mice that became infected in the presence of an index mouse as a function of genotype.