Science1930sAustraliahigh confidence

In 1936, Burnet discovered that influenza virus can be grown in embryonated hens' eggs.

Notes on verification

Well-documented in virology history; Burnet's 1936 work built on Goodpasture's egg-culture technique, consistently cited across CDC, peer-reviewed reviews, and textbooks. [tier=gold indep_score=1.0 clusters=3 claim_tier=notable | framework convergence=partial — publishers independent, evidence may not be | kind=empirical eligibility=high]

Sources