The Virus

This DataPack adds the COVID-19 virus. If you want to know if you are infected you have to trade a test kit from a wandering trader, but 5-7 minutes after you get infected you will feel some symptoms. There are five different cases if you get the worst, there is a big chance of dying. But Villagers also can get an infection, of course, you can infect villagers, villagers can infect you, and villagers can infect villagers, as well as players, can infect other players. To test villager you have to throw a test kid to them. Infected villagers or players will cough. But after an infection, you will get immune so you cannot infect twice.
Commands:
Do: /function virus:a_new_virus to remove everyone's immunity
and: /function virus:delete_the_virus to make everyone immune.
Have fun!