Answer 1

1. True, and…“The burden of illness due to influenza as measured in health care utilization is less than the total burden of clinically significant illness, but much less than the attack rate as measured by seroconversion.”1

2. True,2 although some interesting questions are raised by articles such as that by Cannell et al.3

3. True. Measures proved likely to reduce the spread of viral respiratory disease such as influenza …