Which is not a bacterial disease?

Correct option is A

Coccidiosis is not a bacterial disease; it is caused by protozoan parasites of the genus Eimeria. Bacillus, Anthrax, and Septicemia are bacterial diseases. Bacillus is a bacterial genus, Anthrax is caused by the bacterium Bacillus anthracis, and Septicemia is a condition where bacteria enter the bloodstream, often causing a systemic infection.