ENA Respiratory is a clinical‑stage pharmaceutical company developing antiviral host‑defence enhancers to prevent severe complications from respiratory viral infections in vulnerable populations. Its lead product, INNA‑051, is a first‑in‑class TLR2/6 agonist delivered as a self‑administered nasal spray with a weekly dosing regimen that primes the upper‑respiratory tract’s innate immunity to accelerate viral clearance and reduce disease spread.