Serological examinations of slaughtered animals (76 cattle and 184 goats) in the slaughter-house of Colombo/Sri Lanka revealed antibodies against Listeriosis, Brucellosis, Q-fever, RMSF-Rickettsia-group, Echinococcus and Adenoviruses. As the results show, part of this zooanthroponosis has a role to play in human medicine and human infections are to be expected.