Analysis of foodborne disease in Belgium in 1997.

Foodborne disease represents a major problem for public health in industrialized countries, albeit with a low lethality. Foodborne diseases are defined as a group of viral, bacterial or parasitic gastrointestinal infections transmitted by means of food. Proper food-hygiene practices and surveillance of individual diseases and in particular outbreaks are the first steps in targeting their prevention.

The immunodepressive effect of infectious bursal agent on vaccination against Newcastle disease.

Immunodepression due to an infectious bursal agent (IBA) infection depends on the age of the birds, the time of Newcastle disease (ND) vaccination and the IBA strain used. The immunodepressive effect of IBA on ND vaccination can be avoided by vaccinating the chicks against ND at day old or by using attenuated strains of IBA in all commercial vaccines.