Which of the following serves as reservoir hosts for all three of the pathogens that cause salmonellosis, influenza, and toxoplasmosis?
a. cats
b. reptiles
c. birds
d. mice
e. cattle

Birds option c is correct.

Explanation: Birds represents an example of natural reservoir host for the three zoonotic pathogens. For example poultry for salmonellosis and influenza from which house cats, humans and birds of prey can be infected. In the case of Toxoplasma gondii pigeons represent a better example of reservoir host.

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