» Nie maja 09, 2010 12:20
Re: FIV-ki, pariasi kociego świata.
Dostałam kolejny pakiet artykułów dotyczących FIV. Pierwszy z nich dotyczy badań w Niemczech (chyba już ktoś o nim wspominał). Badanie przeprowadzono na grupie ponad 17 000 kotów.
I tam jest napisane, że średni czas życia kotów zakażonych FIV nie różni się istotnie od tych niezakażonych. Krótszy jest w przypadku kotów, u których występuje dodatkowo zakażenie FeLV.
Myślę, że dobrze byłoby o tym pamiętać.
W skrócie (bez tabelek i wykresów):
Prevalence
During the period of investigation 563 of 17,289 cats tested positive for antibodies against FIV. The prevalence was 3.2% and did not change significantly between 1993 and 2002 (3.1% and 3.5%, respectively). Of 17,462 cats, 638 (3.6%) tested positive for the presence of FeLV antigen. Prevalence of FeLV decreased significantly during the time of investigation from 6% to 1% (Fig 1). Forty-two cats (0.2%) were positive for both viruses.
Risk factors
Using the bivariate analyses, several factors were found to be significantly associated with risk of retroviral infection (Table 2). In particular, the risk of FIV or FeLV infection was significantly higher in male than in female cats, in mixed breed (including DSH and longhair cats) than in purebred cats, and in cats with access to outdoors. Cats with contact to other cats and those showing aggressive behaviour were more likely to be infected with either virus. Living in a multi-cat household did not influence the risk of retroviral infection.
Median age of FIV-infected cats was 6 years (range 0.2-18 years) and was significantly higher than the median age of FIV-negative cats (3 years; range 0.05-24 years). The median age was not significantly different between FeLV-positive (3 years, range 0.15-19 years) and negative cats (3 years, range 0.02-24 years). Regression analysis confirmed factors for gender, breed, housing, FeLV co-infection, fighting behaviour, and age as significant risk factors for FIV infection (Table 3). Male cats, older cats, cats with access to outdoors, mixed breed and DSH or longhair cats, as well as cats with aggressive behaviour had a higher risk of infection than female cats, younger cats, cats confined to indoors, purebred cats and cats with a less aggressive behaviour. Infection with FeLV increased the risk of infection with FIV. Significant risk factors of FeLV infection after performance of regression analysis included factors for gender, FIV infection, and contact with other cats (Table 4). Infection with FIV, contact to other cats, and male gender increased the risk of infection with FeLV.
Survival times
There was no statistically significant difference in the survival time of FIV-infected compared to non-infected cats. The mean survival time of FIV-positive cats was 784.8 days (95% confidence interval (CI) 413.0-1156.5) compared to 625.0 days (95% CI 426.4-823.6) for FIVnegative cats (P =0.539). The mean survival time of FeLV-positive cats was 311.9 days (95% CI 17.0-606.9) and this was significantly shorter than the survival of FeLV-negative cats (732.5 days; 95% CI 532.7-932.4; P = 0.044) (Figs 2 and 3).
za: Prevalence of feline immunodeficiency virus and feline leukaemia virus among client-owned cats and risk factors for infection in Germany, Sabine E Gleich DVM, Stefan Krieger Dipl Stat, Katrin Hartmann Dr Med Vet, Dipl ECVIM-CA Prof
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