Vaczine is a digital simulator that demonstrates the effect of vaccination in preventing infectious contagious diseases at the population level. Created for educational purposes, this program allows you to configure parameters such as percentage of vaccinated people, infectivity, and mortality of the disease before each simulation.

Vaczine creates a population of people, including infants, children, youth, adults, and the elderly. Each person moves freely on the screen, and each person can be in five different states: healthy without vaccination, healthy vaccinated, sick, cured, and dead. Sick people can infect others who are not immunized by contact, while vaccinated people are immune to contagion. After a while, sick people are cured, and they also become immune to the disease.