20 May 2019 These diseases can be transmitted by direct contact (in saliva, blood, urine, etc), indirect contact (from where animals live or objects they touch), vectors (e.g. mosquitoes, ticks and fleas) or food products of animal origin. About 65% of animal diseases are transmissible to humans and 75% of human diseases can be transmitted by animals. The most important zoonoses are: Leptospirosis; Rabies; Brucellosis; Toxoplasmosis; Q fever; Echinococcosis. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.