A toy that belongs to a child with influenza is likely to be contaminated with the influenza virus. In this particular example, what can the the toy be referred to as? A. vector B. pathogen C. host D. fomite
The correct answer and explanation is:
Correct Answer: D. Fomite
Explanation:
A fomite is any inanimate object or surface that can become contaminated with infectious agents and serve as a vehicle for transmission. In the context of the question, the toy that belongs to a child with influenza is likely to have been contaminated with the influenza virus through the child’s respiratory secretions (e.g., coughing, sneezing, or touching it with contaminated hands). Therefore, the toy is acting as a fomite.
Why not the other options?
- A. Vector:
A vector is a living organism, usually an insect or animal, that transmits infectious agents between humans or from animals to humans. For example, mosquitoes are vectors for malaria and dengue. Since the toy is not a living organism, it cannot be classified as a vector. - B. Pathogen:
A pathogen is the microorganism that causes disease, such as bacteria, viruses, fungi, or parasites. In this case, the influenza virus is the pathogen, not the toy. - C. Host:
A host is a living organism (human or animal) that harbors a pathogen and supports its growth and reproduction. The child with influenza is the host, but the toy is not alive, so it cannot serve as a host.
Summary:
The toy serves as a fomite because it is an inanimate object that can carry and potentially transmit the influenza virus. Fomites play a significant role in indirect transmission, especially in environments like schools, hospitals, and daycares, where surfaces and objects are frequently shared. Proper hygiene practices, such as handwashing and regular cleaning of toys and surfaces, are essential to preventing fomite-mediated transmission of diseases like influenza.