6.7. During many epidemics, health-care professionals emphasize the importance of community mitigation strategies, such as wearing masks, frequent hand-washing, and social distancing. Why is it important for people to adopt these strategies? These strategies are only effective with full compliance, so everyone must be encouraged to practice them. These strategies are the best way to reduce the length of time that a person is able to transmit disease. These strategies help reduce transmission, even when drug-based treatments and vaccines are unavailable. These strategies help the population achieve herd immunity, which doesn't require that everyone is immune. Submit Q6.8. In SIR models, what two things drive the transmission rate, B? O The frequency of contact between susceptible and infected individuals and the length of the infectious period The frequency of contact between susceptible and infected individuals and the probability of infection per contact event . The length of the infectious period and the probability of infection per contact event O The number of recovered individuals and the probability of infection per contact event