That stray spark’s survival is heavily influenced by the herd immunity of the rest of the population.
Put another way if the overall population sees an average of 0.5 or 0.95 infections per case there’s zero chance of a huge outbreak. But odds of a case making it to a vulnerable population is wildly higher in the second case.
Put another way if the overall population sees an average of 0.5 or 0.95 infections per case there’s zero chance of a huge outbreak. But odds of a case making it to a vulnerable population is wildly higher in the second case.