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192 | Kibenge et al.

Table 6.2 Pathogenic avian orthoreovirus isolates
Virus isolate Disease Source Reference
S1133 Tenosynovitis/viral Isolated in 1971 from tendons during a field outbreak of severe tenosynovitis in van der Heide et
arthritis 7-week-old broiler breeder chickens in Connecticut, USA al. (1974)
P100 Tenosynovitis/viral An attenuated vaccine strain of S1133 virus produced by 235 passages in Gouvea and
arthritis chorioallantoic membrane followed by 100 additional passages in chicken embryo Schnitzer (1982b)
fibroblast cell cultures. P100 at a high concentration is capable of killing chicks
when inoculated by either the subcutaneous or foot pad route
2408 Malabsorption Isolated in 1983 from the tendons of 2-week-old broiler chickens experiencing high Rosenberger et al.
syndrome morbidity and mortality and depressed weight gain in Delaware, USA (1989)
CO8 Malabsorption Isolated in 1982 by Dr P. Villegas of the University of Georgia from the intestines Hieronymus et al.
syndrome of broilers in North Carolina, USA experiencing high morbidity and mortality and (1983a)
depressed weight gain
UMI-203 Tenosynovitis/viral Isolated in 1972 in Maine, USA from the tendons of 12-week-old broiler breeder Johnson (1972)
arthritis replacement chicks with a history of lameness and increasing mortality since 8
weeks of age
WVU 1675 Tenosynovitis/viral Isolated in 1957 in West Virginia, USA from the tendons of chicken by Olson van Loon et al.
arthritis (2001)
WVU 2937 Tenosynovitis/viral Isolated in West Virginia, USA from synovia of broiler chickens with severe synovitis Olson and
arthritis Solomon (1968)
2177 Tenosynovitis/viral Isolated in 1989 in Delaware, USA from the hock joint of a less than 2 weeks old Rosenberger et al.
arthritis commercial broiler chicken (1989)
1733 Femoral head Isolated in 1983 in Delaware, USA by Rosenberger from the femoral bone marrow of Ruff and
necrosis a 4-week-old broiler chicken Rosenberger
(1985)
Lasswade Tenosynovitis/viral Isolated in Scotland from the tendons of chickens with tenosynovitis Macdonald et al.
126/75 arthritis (1978)
67/75 and Tenosynovitis/viral Isolated from the tendons of laying chickens in Scotland Guneratne et al.
126/75 arthritis (1982)
Fahey-Crawley Respiratory disease Isolated in Toronto, Canada, from cases of chronic respiratory disease in chickens Fahey and Crawley
(1954)
176 and 172 Tenosynovitis/viral Isolated in Georgia, USA, from the hock joints of 2- to 3-week-old broiler breeders Hieronymus et al.
arthritis exhibiting leg problems (1983b)
SK138a Tenosynovitis/viral Isolated from the hock joint of an infected chicken in New Brunswick, Canada Duncan and
(ARV138) arthritis Sullivan (1998)
43A, 45, 81-5, Malabsorption Isolated in Georgia, USA from the intestines of 3–6 weeks old broiler chickens Hieronymus et al.
and 82-9 syndrome exhibiting clinical signs of malabsorption syndrome (1983a)
Uchida, TS17 Gastroenteritis, Isolated in Japan from intestines of chickens with gastroenteritis and respiratory Kawamura and
and CS108 respiratory disease signs Tsubahara (1966)
Reo 25 Cloacal pasting Isolated in Minnesota, USA from 1-week-old chicks with cloacal pasting Deshmukh and
Pomeroy (1969a)
TR 1 Tenosynovitis/viral Isolated from the hock joint of a turkey with arthritis Afaleq and Jones
arthritis (1991)
EK 2286 Gastroenteritis Isolated in West Germany from chickens with anaemia, liver, spleen, intestinal, and Guneratne et al.
bone marrow lesions (1982)
49/82 Malabsorption Isolated from faeces in an outbreak of the infectious stunting syndrome in four al Afaleq and
syndrome weeks old broiler chickens Jones (1994)
R-l, R-5, R-6 Tenosynovitis/viral Isolated in England from the hock joints of chickens with tenosynovitis Guneratne et al.
and R-11 arthritis (1982)
R 2 Tenosynovitis/viral Isolated in UK from a case of tenosynovitis in a broiler breeder chicken. This isolate Jones et al. (1981)
arthritis was shown to cause rupture of digital flexor and gastrocnemius tendons in chickens
following experimental infection
R 13 None Isolated in UK from droppings of a clinically normal wedge-tail eagle (Aquila audax) Jones and
Guneratne (1984)
R-17 Diarrhoea Isolated in England from faeces of a broiler chicken with diarrhoea Guneratne et al.
(1982)
R19 Tenosynovitis/viral Isolated from chicken tenosynovitis cases in England Jones (1976)
arthritis
2035 Tenosynovitis/viral Isolated from the hock joint of a 3 day old broiler chicken Ruff and
arthritis Rosenberger
(1985)