| Year | Event | Reference |
| 1963 | IBH was first described in 1963 in the USA
|
Helmboldt CF and MN Frazier, 1963. Avian hepatic inclusion bodies of unknown significance. Avian Dis, 7: 446-450 |
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| 1976 | EDS: firstly described in 1976 by Van Eck et al. in The Netherlands | Van Eck JHH et al., 1976. Dropped egg production, soft shelled and shell-less eggs associated with appearance of precipitins to adenovirus in flocks of laying fowl. Avian Pathol, 5: 261-272. |
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| 1988 | Hydropericardium Syndrome first
reported from
Angara Goth near Karachi in Pakistan
reported from Angara Goth near Karachi in Pakistan |
Jaffery MS, 1988. A treatise on Angara disease (hydropericardium pulmonary oedema- hepatonephritis syndrome). Pak Vet Med Assoc, pp: 1-33. |
