Which illness is described as an acute viral respiratory infection with influenza‑like symptoms and is managed with droplet precautions?

• A. Influenza
• B. Common cold
• C. Strep throat
• D. Pneumonia

Answer: (A)

Influenza is an acute viral respiratory infection that typically presents with fever, body aches, malaise, cough, and sore throat, often with abrupt onset. It spreads mainly through respiratory droplets, so droplet precautions are used in care settings to prevent transmission. This combination of a viral illness with influenza-like symptoms and the need for droplet precautions best matches influenza. The common cold is usually milder and lacks the prominent systemic symptoms; strep throat is bacterial with a sore throat and often exudates rather than a viral prodrome; pneumonia involves lung infection with different signs and imaging findings, not the classic influenza-like presentation.