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Pharyngitis Learning Center
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Many germs can cause pharyngitis. Viruses are the most common cause of pharyngitis. Many different viruses can cause pharyngitis. Most cases of pharyngitis occur during the colder months. The illness often spreads among family members.
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A virus is an infectious agent, often highly host-specific, consisting of genetic material surrounded by a protein coat.
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Bacteria are prokaryotes (unicellular organisms with no membrane-enclosed nucleus) with simple structures that typically range in size from about 0.5 to 20 micrometers.
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