CFR can give you an indication of how long its going to last. If its low and you're getting smashed, that tells you that significant portions of the population

CFR can give you an indication of how long its going to last. If its low and you're getting smashed, that tells you that significant portions of the population are getting infected and it will run out of steam sooner. Higher CFR tells you that the exceeded capacity will last for longer. That will impact the strategies you use.