A very simple concept, but I found myself playing it for a bit. It was kind of fun!
My main issues are with the presentation and feedback. Sometimes, things would happen and I didn't know what they meant (like the screen would shake sometimes, don't know what it indicated). I'm also still not sure at what point you lose.
I also think that parts of your art look really nice, the lungs, liver, and heart bouncing look cute and good, I like the viruses and their death things. But the body seemed rush, the lines aren't connected and color is going out of the sometimes. I think the smiling heart could have been used as a cool indicator too, maybe as you did worse and worse it would could get sadder?
Overall, a decent job for your first game jam, I can see a lot of potential.