Meanings of obligate anaerobe in English

Do you have a bacterium that is a sulphur-concentrating obligate anaerobe?

The spore-forming obligate anaerobe Clostridium difficile is a leading cause of antibiotic-associated diarrhea around the world.

These complications arise in part because C. difficile makes metabolically dormant spores, which are the major infectious particle of this obligate anaerobe.

Sporulation allows bacteria to survive adverse conditions and is essential to the lifecycle of some obligate anaerobes.

Similar observations were made for the total viable cell counts and the proportions of obligate anaerobes with the exception of day 360.