Which symptoms are typical of influenza type A?

• A. Cough, sore throat, and fatigue during flu season
• B. Cough, fever, chest pain, and anosmia (loss of smell)
• C. Cough, runny/stuffy nose, and sore throat
• D. Barrel chest, pursed-lip breathing, cyanosis, and dyspnea on exertion

Answer: (A)

Influenza A typically presents as a viral upper respiratory illness with systemic symptoms such as fatigue, along with cough and sore throat. The set that includes cough, sore throat, and fatigue during flu season matches these common features, making it the best fit. The other options include symptoms that are less characteristic of uncomplicated influenza: anosmia and chest pain aren’t standard for flu, and signs like barrel chest, pursed-lip breathing, cyanosis, and dyspnea on exertion suggest severe respiratory disease or a different condition.