Campylobacter can indeed come from the chickens; in fact, likely did.
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/201600.htm
Here's info about the histomoniasis
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/203000.htm
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/201600.htm
Here's info about the histomoniasis
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/203000.htm