Yes, after a year of treating the illness now each patient takes less hospital resources. They were able to get the death rate from 900/day during a time with 5000 new infections per day, down to about the same daily death rate with 25,000 new infections per day.
You don’t know anything about the amount of infections in March other than that it was more than 5000 per day, because there was a shortage of testing kits, which is my point.