Which type of disinfection can eliminate some bacterial spores but not all?

High-level disinfection is the correct choice because it is capable of eliminating most bacteria, viruses, and fungi, as well as some bacterial spores. This method is often used for instruments that come into contact with mucous membranes but do not require sterilization, making it appropriate for various non-invasive medical applications. While it significantly reduces microbial contamination, it does not achieve complete sterility, which would be necessary to eliminate all bacterial spores.

In contrast, low-level disinfection is adequate for cleaning surfaces and non-critical items, but it does not destroy all bacteria and viruses effectively. Intermediate-level disinfection targets a broader range of pathogens than low-level disinfection but is still not sufficient to kill all bacterial spores. Terminal disinfection refers to cleaning performed after procedures to eliminate pathogens from the environment but does not specify a level of effectiveness against bacterial spores.

By understanding these distinctions, it becomes clear why high-level disinfection is unique in its ability to eliminate some but not all bacterial spores, making it essential for certain applications in healthcare settings.