Examlex
Which of the following statements comparing virus classification and taxonomy of organisms is true?
Vaccine
A biological preparation that provides active acquired immunity to a particular infectious disease, often containing agents that resemble the disease-causing microorganism.
Phenomenon
An observable event or fact that is often remarkable or unusual, studied across scientific and philosophical fields.
Acute Infections
Infections that have a rapid onset and typically a brief duration, often leading to noticeable symptoms and requiring immediate treatment.
Chronic Infections
Long-term infections that persist for months or years, often due to the inability of the immune system to clear the pathogen.
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