What is the major cause of nasopharyngitis?
a. protozoa c. bacilli
b. bacteria d. viruses
D
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A Incorrect. Protozoa are not the major cause of nasopharyngitis.
B Incorrect. Bacteria are not the major cause of nasopharyngitis.
C Incorrect. Bacilli are not the major cause of nasopharyngitis.
D Correct. Nasopharyngitis is almost always caused by a microorganism. Viruses are the etiologic agents most of the time.
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