An organism or infectious agent that causes disease; includes viruses, bacteria, fungi, and parasites.

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Get ready for the McClure HSHS Current Issues in Healthcare Test. Study with multiple choice questions, hints, and explanations. Prepare effectively and ace the exam!

Multiple Choice

An organism or infectious agent that causes disease; includes viruses, bacteria, fungi, and parasites.

Explanation:
The concept here is that a pathogen is any organism or infectious agent that causes disease, including viruses, bacteria, fungi, and parasites. Pathogens encompass all these kinds of disease-causing agents, which is why it’s the best fit. Each of the other terms refers to a specific type of microorganism or group, not the entire set: bacteria, viruses, and parasites can cause disease, but they don’t include fungi or other potential disease-causing agents in one umbrella term. Also, it’s worth noting that many microbes can exist without harming a host, so only the subset that causes disease are called pathogens.

The concept here is that a pathogen is any organism or infectious agent that causes disease, including viruses, bacteria, fungi, and parasites. Pathogens encompass all these kinds of disease-causing agents, which is why it’s the best fit. Each of the other terms refers to a specific type of microorganism or group, not the entire set: bacteria, viruses, and parasites can cause disease, but they don’t include fungi or other potential disease-causing agents in one umbrella term. Also, it’s worth noting that many microbes can exist without harming a host, so only the subset that causes disease are called pathogens.

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