Bovine leukaemia virus infection in New Zealand cattle

Cr, Parrish; Re, Oliver; Weddell, W.; Kc, Corrin

doi:10.1080/00480169.1982.34879

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…Bovine leukaemia virus has been found in New Zealand herds, although the prevalence of infection was low (Parrish et al, 1981). The virus has been found in meat and unpasteurized milk in other countries (Ferrer et al, 1981;Miller and Van der Maaten, 1979).…”

Section: Discussionmentioning

confidence: 99%

Non‐hodgkin's lymphoma and farming: An expanded case‐control study

Pearce¹,

Sheppard²,

Smith³

et al. 1987

Intl Journal of Cancer

106

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A previously published case-control study of agricultural risk factors involved male cases of non-Hodgkin's lymphoma registered under code 202 of the International Classification of Diseases (ICD). This study has been expanded with the inclusion of cases registered under ICD code 200, and additional controls. The expanded study comprises 100 ICD 200 cases and 83 ICD 202 cases registered during the period 1977-81, together with 338 controls selected from other cancer registrations during the same period. The largest relative risk for specific farming types was for orchard workers (odds ratio = 3.7, 90% confidence limits 1.1-12.1). No elevated risks were observed for exposure to farm animals, nor for potential exposure to phenoxy herbicides (odds ratio = 1.0, 90% confidence limits 0.7-1.5), or chlorophenols (odds ratio = 1.4, 90% confidence limits 0.8-2.3). The previous finding of an excess risk associated with fencing work was weakly supported by the expanded study (odds ratio = 1.4, 90% confidence limits 1.0-2.0). However, the previous finding of an excess risk associated with meat works employment was more strongly supported (odds ratio = 1.8, 90% confidence limits 1.2-2.6). One relevant risk factor is 2,4,6-TCP which is used in the treatment of pelts, but the excess risks do not appear to be confined to pelt department workers. An alternative hypothesis is that meat workers may be exposed to oncogenic viruses.

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Section: Discussionmentioning

confidence: 99%

Non‐hodgkin's lymphoma and farming: An expanded case‐control study

Pearce¹,

Sheppard²,

Smith³

et al. 1987

Intl Journal of Cancer

106

View full text Add to dashboard Cite

show abstract

“…Epidemiologic evidence for the role of zoonotic viruses in human cancer is currently weak, although some studies have found associations between various hematologic malignancies and farming (40). One candidate, bovine leukemia virus, is an exogenous C type retrovirus which has been established as the etiologic agent of the adult form of bo vine lymphosarcoma (l6) and occurs in New Zealand (42). The virus is related closely to human T-cell leukemia-lymphoma virus type I, the cause of adult T-cell leukemia in humans (43), and is transmitted horizontally (44).…”

Section: Discussionmentioning

confidence: 99%

Cancer risks among New Zealand meat workers.

Reif¹,

Pearce²,

Fraser³

1989

Scand J Work Environ Health

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. Ca ncer risks among New Zealand meat wor kers. Scand J Work Environ Health 1989;15:24-29. The study reports a series of case-referent studies based on the New Zealand Ca ncer Register and involving 19904 male cancer patients aged 20 years or more at the time of registr ation during the period 1980-1984. For each cancer site, the registration s for the remaining sites form ed the referen ce group. An increase d risk for lung (O R 1.30,95 % CI 1.06-1.58) a nd laryngeal (OR 2.01, 95 % CI 1.19-3.39) cancer was found amon g meatw ork ers. It was confined to men aged <65 yea rs at registration. The risk for so ft-tissue sarcoma was elevat ed (OR 1.90,95 % CI 0.90-4.02). Th e risk estimate for all types of leukemia was elevated moderately (OR 1.45,95 % CI 0.90-2.31), but cell typespecific analyses revealed a greater effect for acute myeloid leukemia (OR 2.12, 95 % CI 1.09-4.12).This study adds to the evidence that employment as a rneatw orker is associated with increa sed risk for several forms of can cer .

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Increased Risks of Soft Tissue Sarcoma, Malignant Lymphoma, and Acute Myeloid Leukemia in Abattoir Workers

Pearce¹,

Smith

Reif

1988

American J Industrial Med

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This paper presents a review and further analysis of a series of New Zealand case-control studies which have found elevated risks for soft tissue sarcoma (STS), non-Hodgkin's lymphoma (NHL), and acute myeloid leukemia (AML) in abattoir workers. The first published study involved 82 cases of STS (ICD 171) and found a relative risk of 2.8 (90% confidence interval 1.3-6.3). Interviews with an additional 51 cases reported here revealed a relative risk of 1.6 (90% confidence interval 0.9-3.0). Two further studies involved interviews with 100 cases of the category of NHL involving lymphosarcoma and reticulosarcoma (ICD 200) and 83 cases of other NHL (ICD 202). Relative risk estimates were 1.8 (90% confidence interval 1.1-2.9) and 1.7 (90% confidence interval 1.0-2.8), respectively. A study of 150 cases of AML (ICD 205.0) found a relative risk of 2.5 for abattoir workers (90% confidence interval 1.3-4.7). Finally, a United States cohort study found a standardized mortality ratio of 2.4 (90% confidence interval 0.8-5.4) for Hodgkin's disease (ICD 201) and 2.2 (90% confidence interval 0.8-4.5) for cancer of other lymphatic tissue (ICD 202, 203, 208) among abattoir workers. Abattoir workers are potentially exposed to oncogenic viruses, including bovine leukemia virus. Some workers may also be exposed to the animal carcinogen 2,4,6-trichlorophenol when treating pelts.

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Bovine leukaemia virus infection in New Zealand cattle

Cited by 6 publications

References 4 publications

Non‐hodgkin's lymphoma and farming: An expanded case‐control study

Non‐hodgkin's lymphoma and farming: An expanded case‐control study

Cancer risks among New Zealand meat workers.

Increased Risks of Soft Tissue Sarcoma, Malignant Lymphoma, and Acute Myeloid Leukemia in Abattoir Workers

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