Multiple Choice
Contamination of food items by other living organisms is known as:
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1. Introduction to Microbiology
Introduction to Microbiology
Multiple Choice
Which of the following are the two most likely sources of bloodborne pathogens in a healthcare setting?
A
Direct skin contact and insect bites
B
Unwashed hands and contaminated water
C
Needlestick injuries and contaminated blood products
D
Airborne droplets and contaminated food
Verified step by step guidance1
Step 1: Understand what bloodborne pathogens are — these are infectious microorganisms in human blood that can cause disease in humans, such as HIV, hepatitis B, and hepatitis C viruses.
Step 2: Identify common routes of transmission for bloodborne pathogens in healthcare settings, which typically involve direct exposure to infected blood or bodily fluids.
Step 3: Evaluate each option by considering whether it involves direct contact with blood or blood-contaminated materials. For example, needlestick injuries involve direct penetration of the skin by contaminated needles, which is a high-risk exposure.
Step 4: Recognize that contaminated blood products (such as transfusions) are another major source of bloodborne pathogens because they involve direct introduction of infected blood into a patient’s bloodstream.
Step 5: Conclude that the two most likely sources are those involving direct blood exposure: needlestick injuries and contaminated blood products, rather than routes like airborne droplets, insect bites, or contaminated food, which are less relevant for bloodborne pathogens.
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