Pediatrics Croup syndrome is usually caused by –a) Rhinovirusesb) Coxsackie A virusc) Coxsackie B virusd) Para influenza A b B c C ac D ad 💡 Explanation Croup syndrome is usually caused by –a) Rhinovirusesb) Coxsackie A virusc) Coxsackie B virusd) Para influenza ✓ Correct Answer: D. ad