What chicken diseases can guineas get?

[taprock]

Had a young chicken in quarantine with young guineas and the chicken died. No idea from what there were no symptoms. It got me to wondering what diseases they share. I have read cocci and mareks but I'm really not sure and it was just mentioned but nothing definite was given.

 

[racuda]

I've seen this question asked a lot and nobody ever comes up with an answer. Guineas just don't seem to be susceptible to disease.