Not exactly what you are looking for but similar flavor. The most obvious option to me is liar. claim, verb. state or assert that something is the case, typically without providing evidence or proof. purport, verb. to claim to be or do a particular thing when this claim may not be true.
Background. Leptospirosis is an infectious disease of humans and animals that is caused by pathogenic spirochetes of the genus Leptospira. It is considered the most common zoonosis in the world.Leptospirosis is distributed worldwide (sparing the polar regions) but is most common in the tropics.Leptospirosis has been recognized as a re-emerging infectious disease among animals and humans and has the potential to become even more prevalent with advancing climate change and related trends.eptospirosis is distributed worldwide (sparing the polar regions) but is most common in the tropics. Leptospirosis has been recognized as a re-emerging infectious disease among animals and humans and has the potential to become even more prevalent with advancing climate change and related trends.
Leptospirosis **. Leptospirosis is a bacterial disease caused by Leptospira interrogans that can occur in a large number of animals, including cattle, sheep, goats, pigs, horses, and dogs. Leptospirosis is spread through the urine of infected animals and can survive in water and soil for months.abies is a deadly viral infection affecting all mammals, including humans. Rabies is spread in the saliva of a rabid animal, typically through bite wounds. Cattle may show changes in behavior, excessive vocalization, have difficulty swallowing, drool, and/or become paralyzed.