A virus circulating a population of a million people, who have a normal mortalit
A virus circulating a population of a million people, who have a normal mortality
rate of 10^-6/week. The virus has a transmission rate of 10^-5 per week. Those who are infected
cause additional mortality at a rate of 0.1/week (10% of cases per week), and everyone who
survives recovers within one week (a recovery rate of 1/week), and gain immunity. What is the
minimum number of people in this population of a million who would need to be vaccinated to
reverse the spread of the disease?
