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Streptococcal pharyngitis involves all of the following except?
Streptococcal pharyngitis involves all of the following except?1) a purulent exudate over the tonsils
2) it can lead to scarlet fever if it is an erythrogenic toxin-producing strain
3) it can lead to serious sequelae
4) it is viral in origin
5) it causes difficulty in swallowing and fever
Final answer:Streptococcal pharyngitis is bacterial in origin and involves symptoms like purulent exudate over the tonsils and can lead to scarlet fever and serious sequelae, so it is not viral in origin.Explanation:Streptococcal pharyngitis, commonly known as strep throat, involves several clinical features, but it is not viral in origin. Streptococcus pyogenes, a gram-positive bacterium, is responsible for this infection. Symptoms of strep throat include a purulent exudate over the tonsils, difficulty in swallowing, fever, and if caused by an erythrogenic toxin-producing strain of the bacteria, it can lead to scarlet fever. Serious sequelae such as acute rheumatic fever and acute glomerulonephritis can follow untreated infections. Since strep throat is bacterial in origin, option 4) 'it is viral in origin' is the correct answer as it does not involve a viral cause....