title: No evidence for adaptation of current egg drop syndrome 1976 viruses to chickens.
abstract: In order to determine whether the current field strains of egg drop syndrome (EDS) 1976 viruses adapt to chickens, we compared the growth efficiency of three Japanese field strains (PA-1/79, AWI/98, Gifu/01) in chicken and duck embryo liver cells. The growth efficiency in chicken or duck embryo liver cells was almost similar in these strains. The fiber protein may carry the type-specific antigen and the hemagglutination activity, and hexon protein may contain the subgroup-specific antigenic determinants. Therefore, the fiber head and hexon loop 1 DNA domain sequences of the six Japanese field strains UPA-1/79, ME/80, 44/81, Kyoto/91, AWI/98, Gifu/01) were compared, but these DNA domains were identical among the six field strains. Our data suggested that the EDS virus was maintained without discernible changes for the last two decades in the field.
authors.affiliation: Department of Infectious Diseases, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Tsukamoto
authors.forename: M
authors.initials: M
authors.lastname: Kuwabara
authors.forename: M
authors.initials: M
authors.lastname: Kaneko
authors.forename: M
authors.initials: M
authors.lastname: Mase
authors.forename: K
authors.initials: K
authors.lastname: Imai
mesh_terms: D000222:Adaptation, Physiological; D000257:Adenoviridae Infections / Q000503:physiopathology / Q000662:veterinary / Q000821:virology; D000818:Animals; D000259:Aviadenovirus / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity* / Q000502:physiology; D002460:Cell Line; D002645:Chickens / Q000821:virology*; D004279:DNA, Viral / Q000235:genetics; D004372:Ducks / Q000821:virology; D005260:Female; D007564:Japan; D010058:Oviposition; D011201:Poultry Diseases / Q000503:physiopathology / Q000821:virology*; D013045:Species Specificity; D013577:Syndrome
chemical_list: D004279:DNA, Viral