Occupational Safety and Health Administration (OSHA) SLC Practice Exam

Low-level disinfectants are effective against which types of pathogens?

1. All bacteria and viruses

2. Certain viruses and fungi

3. Only bacterial spores

4. All pathogens on surfaces

The correct answer is: Certain viruses and fungi

Low-level disinfectants are specifically designed to eliminate certain types of pathogens, including some viruses and fungi. These disinfectants are typically effective against vegetative bacteria and have the capability to inactivate certain enveloped viruses, which are generally more susceptible to chemical disinfectants. However, they may not be effective against all types of bacteria or viruses, particularly bacterial spores, which require higher-level disinfectants or sterilization methods to ensure complete inactivation. While low-level disinfectants perform well on a range of pathogens, their limitations mean they do not provide broad-spectrum effectiveness against all pathogens present on surfaces, as would be implied by the other options. Therefore, it's important to recognize the specific capabilities and limitations of low-level disinfectants when considering their use in infection control and sanitation practices.