I had a lot of fun with this! Also impressed with the amount of detail here for a jam game.
I like how it's a simulation game but you're just controlling one character, doing what you can to save people (or not).
It was fun to have two phases, first you're collecting money to research a vaccine while trying to avoid infection, and then you're immune and have to hand out the vaccines.
I was frequently down to only one infected, and while trying to find him he would infect others, quickly raising the number of infected again, which felt realistic and frustrating in a good way.
At a certain point I would have liked to have more stuff to purchase, such as building upgrades, but for a short jam game it was pretty well paced and I never felt bored.