Fourth disease See Dukes disease

Fowl adenovirus A-E (FAdV-A-E) Five species in the genus Aviadenovirus. Differentiated by DNA restriction enzyme fragmentation and sequence comparisons. Differ from duck aden-oviruses in having two fibers at each vertex on the virion, whereas the duck virus has only one. Fowl adenovirus A agglutinates rat erythrocytes only, whereas duck adenovirus agglutinates chicken, turkey and duck erythrocytes. Using neutralization tests, 11 serotypes can be distinguished and are widespread in fowl populations. Originally isolated from an often fatal outbreak of respiratory disease of quail, Colinus virginianus, in USA. Chickens, turkeys, ducks, quail, geese, guinea fowl, pheasants, pigeons, bantams, budgerigars and mallards are also susceptible to infection. Inoculation into embryonated chicken eggs causes death of the embryo, with necrotic foci in the liver. In chicken cell cultures typical CPE is produced. In the older literature strains of each serotype were numbered (1-11) and are distributed as follows:

FAdV-A Fowl adenovirus 1 (also called chicken embryo lethal orphan virus, CELOV).

FAdV-B Fowl adenovirus 5.

FAdV-C Fowl adenoviruses 4 and 10.

FAdV-D Fowl adenoviruses 2, 3, 9 and 11.

FAdV-E Fowl adenoviruses 6, 7, 8a and 8b.

Synonym: quail bronchitis virus; chicken embryo lethal orphan virus.

Gelderblom H and Maiche-Lauppe I (1982)

Arch Virol 72, 289

McFerran JB and Adair BM (1977) Avian Pathol 6, 189

Monreal G (1992) Poultry Sci Rev 4, 1

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