A streptobacillus is a type of bacteria that is long and thin, like a rod.
Streptobacillus are usually thought of as harmful and can cause sickness.
Examples:
The doctor found streptobacillus in the patient's blood sample.
Streptobacillus can make you very sick.
The streptobacillus moved around under the microscope.
The streptobacillus tried to hide from the medicine, but the medicine found it.
There were so many streptobacillus, it looked like a big army.
The streptobacillus was like a tiny snake, but it was not a nice snake.