| Year | Event | Reference |
| 1930 | First report of Infectious Bronchitis in North Dakota. "An apparently new respiratory disease of chicks". | Schalk & Hawn (1931) J Am Vet Med Assoc 78:413-422 |
| 1936 | First demonstration of a coronavirus disease, infectious bronchitis (IB), in domestic fowl. | Beach & Schalm (1936) Poult Sci 15:199-206 |
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| 1937 | First cultivation of infectious bronchitis virus in chick embryos. | Beaudette & Hudson (1937) J Am Vet Med Assoc 90:51-58 |
| 1949 | "Stunting and curling" in chick embryos is a pathognomonic lesion. | Fabricant (1949) Cornell Vet 39:414-431 |
| 1968 | First identification of Coronaviruses as a new group. | Almeida et al (1968) Nature 220 (5168): 650 |
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1987 |
First report on a coronavirus genome (IBV) complete sequence. | Boursnell, et al. (1987) J Gen Virol 68:57-77 |
