Version: 1.26.158551
Server Type: Official
My character got an illness which I'm assuming was either influenza or the newly added pneumonia as I got it after being wet/cold for a while, and my character had a fever.
While I had this illness whenever I would connect to the server my character would immediately vomit upon logging in, 100% of the time.
https://www.youtube.com/watch?v=rJqbBZP65Yk
Once the illness was cured I relogged again and the vomiting had now stopped.