# Plague doctors (locked)

3 posts

 Hey all, in the early to mid game when Plagues can be devastating.. how many plague doctos should we keep? In late game I keep 50 per city and that seems to be plenty with about 20 population and about 40-50 health. How many will you keep if your city has between 10-15 population and 30-50 health? The best info we have is this post from the developer: @rich it's a bit difficult to explain since the equation is kinda complex. Basically when plague appears, it has an initial strength. Every second, that strength is reduced by : (health 10 / population) + POWER(nb_doctors, 0.8) ratio health is the health of the city (between 0 and 1, 1=100%) i believe i don't have to give explanation about population & nb_doctors ratio is 0.3 if you have an hospital, 0.2 if you have an aqueduct and 0.1 otherwise. Honestly I had no idea how to explain that in a tooltip without being too descriptive (like i'm being right now). To be very basic, in a city of 10 people with 30% health and with no buildings, 1 doctor will reduce duration by 25%, 10 doctors by 52% and 100 doctors by 92% With an hospital, it becomes: 1 doctor will reduce duration by 50%, 10 doctors by 84% and 100 doctors by 97% This very helpful. Thanks a lot!