Fleas are ectoparasitic blood-sucking insects with the ability to jump, which commonly infest wild and domestic animals (mainly dogs and cats) but also humans.
Sindbis virus is widely and continuously found in insects (the main vectors are Culex and Culiseta mosquitoes) and vertebrates in Eurasia, Africa, and Oceania. ECDC factsheet for health professionals
Tularaemia is a zoonosis (infection that could transmit from animals to humans), A range of wild and domestic animals such as hares or rodents may function as the reservoir for tularaemia, as well as ticks.