- Health Rounds: Nasal spray for allergies may help prevent COVID, common cold infections Reuters
- Common allergy spray slashes COVID-19 risk in surprising trial ScienceDaily
- Medical Bulletin 09/September/2025 Medical Dialogues
- Q&A: Azelastine nasal spray may reduce risk for COVID-19 Healio
- Why a common allergy nasal spray might prevent COVID University of Cincinnati