Eighteen years of vaccination against viral haemorrhagic septicaemia in France.

Viral haemorrhagic septicaemia (VHS) has been considered for many years to be a major cause of loss in the French trout industry. The high prevalence of VHS in certain geographic areas made a control strategy based on control policy unfeasible. This provided the impetus for immunoprophylaxis development that resulted in 3 successive types of vaccines: inactivated, live attenuated and recombinant vaccines.

[Avian mycoplasmosis: Comparative study of the plate agglutination test, haemagglutination inhibition test and metabolic inhibition test for detection of antibody against Mycoplasma gallisepticum].

This study was performed with the use of the MG/S6 strain of Mycoplasma gallisepticum, reference sera, sera from vaccinated chickens (given at inactivated vaccine) and sera from infected turkeys in the field. Titres of antibody detected were well correlated for the three tests. However, the plate agglutination test (PAT) allowed the earliest detection, and metabolic inhibition test (MIT) was as sensitive and specific as the haemagglutination inhibition test (HIT).

[Enzootic bovine leukosis application of E.L.I.S.A. technique for the detection of antibodies].

A simple microplate method of enzyme-linked immunosorbent assay (E.L.I.

Enzootic bovine leukosis: an epidemiological survey among cattle in the west of France by precipitating antibody detection.

In order to inform the sanitary veterinaty authorities, an epidemiological survey was carried out in the West of France to appreciate the level of infection by BLV in cattle. More than 10,000 sera from 763 herds were tested by agar gel immuno-diffusion. The animals were more than one-year-old dairy cattle.