Clinical data from 488 cats (1979-2000) with histopathologically confirmed feline infectious peritonitis (FIP) and 620 comparable controls were evaluated retrospectively to assess the value of several diagnostic tests frequently used in the evaluation of cats with suspected FIP. Diagnostic utility of serum albumin to globulin ratio for the diagnosis of FIP was greater than of the utility of serum total protein and gamma-globulin concentrations. Diagnostic utility of these variables was higher when performed on effusion. On effusion, positive and negative predictive values of Rivalta's test, a test that distinguishes between exudates and transudates (0.86 and 0.97), anti-coronavirus antibody detection (0.90 and 0.79), and immunofluorescence staining of coronavirus antigen in macrophages (1.00 and 0.57) were investigated. The positive and negative predictive values of presence of anti-coronavirus antibodies were 0.44 and 0.90, respectively, antibody concentrations (1:1,600) were 0.94 and 0.88. presence of immune complexes measured by a competitive enzyme-linked immunosorbent assay were 0.67 and 0.84, and detection of viral RNA by serum reverse-transcriptase polymerase chain reaction (RT-PCR) were 0.90 and 0.47. Effusion RT-PCR was performed in 6 cats; it was positive in all 5 cats with FIP and negative in the cat with another disease. Diagnostic assays on the fluid in cats with body effusion had good predictive values. Definitive diagnosis of FIP on the basis of measurement of various variables in serum was not possible. Serum tests can only be used to facilitate the decision for more invasive diagnostic methods.

Clinical data from 488 cats (1979-2000) with histopathologically confirmed feline infectious peritonitis (FIP) and 620 comparable controls were evaluated retrospectively to assess the value of several diagnostic tests frequently used in the evaluation of cats with suspected FIP. Diagnostic utility of serum albumin to globulin ratio for the diagnosis of FIP was greater than of the utility of serum total protein and gamma-globulin concentrations. Diagnostic utility of these variables was higher when performed on effusion. On effusion, positive and negative predictive values of Rivalta's test, a test that distinguishes between exudates and transudates (0.86 and 0.97), anti-coronavirus antibody detection (0.90 and 0.79), and immunofluorescence staining of coronavirus antigen in macrophages (1.00 and 0.57) were investigated. The positive and negative predictive values of presence of anti-coronavirus antibodies were 0.44 and 0.90, respectively, antibody concentrations (1:1,600) were 0.94 and 0.88. presence of immune complexes measured by a competitive enzyme-linked immunosorbent assay were 0.67 and 0.84, and detection of viral RNA by serum reverse-transcriptase polymerase chain reaction (RT-PCR) were 0.90 and 0.47. Effusion RT-PCR was performed in 6 cats; it was positive in all 5 cats with FIP and negative in the cat with another disease. Diagnostic assays on the fluid in cats with body effusion had good predictive values. Definitive diagnosis of FIP on the basis of measurement of various variables in serum was not possible. Serum tests can only be used to facilitate the decision for more invasive diagnostic methods.

No abstract

There were 115 isolates of rabies viruses recovered by tissue culture technique from 119 animal brains collected in Ethiopia. By using 17 selected antinucleocapsid monoclonal antibodies (MAbs), 113 isolates were classic street rabies viruses (serotype 1). An isolate of feline origin (Eth-16) was a Mokola virus (serotype 3) and another isolate (Eth-58, obtained from a rabid dog) was serotype 2 (Lagos bat virus). None of the 16 antiglycoprotein MAbs used neutralized the Eth-16 isolate, whereas Eth-58 was neutralized by 1 (TERA543). Antirabies vaccines prepared from Pitman-Moore and Pasteur virus strains protected mice against homologous challenge, but neither was protective against the 2 rabies-related virus isolates. The isolation of Mokola and Lagos bat viruses from domestic animals in eastern Africa is of public and veterinary concern mainly due to lack of effective vaccines against these agents and the difficulty of proper diagnosis.

To eradicate rabies in foxes, almost 97 million oral rabies vaccine baits have been distributed in Germany and Austria since 1983 and 1986, respectively. Since 2007, no terrestrial cases have been reported in either country. The most widely used oral rabies vaccine viruses in these countries were SAD (Street Alabama Dufferin) strains, e.g. SAD B19 (53.2%) and SAD P5/88 (44.5%). In this paper, we describe six possible vaccine-virus-associated rabies cases in red foxes (Vulpes vulpes) detected during post-vaccination surveillance from 2001 to 2006, involving two different vaccines and different batches. Compared to prototypic vaccine strains, full-genome sequencing revealed between 1 and 5 single nucleotide alterations in the L gene in 5 of 6 SAD isolates, resulting in up to two amino acid substitutions. However, experimental infection of juvenile foxes showed that those mutations had no influence on pathogenicity. The cases described here, coming from geographically widely separated regions, do not represent a spatial cluster. More importantly, enhanced surveillance showed that the vaccine viruses involved did not become established in the red fox population. It seems that the number of reported vaccine virus-associated rabies cases is determined predominantly by the intensity of surveillance after the oral rabies vaccination campaign and not by the selection of strains.