Brucellosis Brucellosis Brucellosis is a highly contagious zoonosis caused by ingestion of unpasteurized milk or undercooked meat from infected animals, or close contact with their secretions. It is also known as undulant fever, Malta fever and Mediterranean fever. "Brucella" species are small, gram-negative, nonmotile, nonspore-forming, rod-shaped (coccobacilli) bacteria. They function as facultative intracellular parasites, causing chronic disease, which usually persists for life. Four species infect humans: "B. abortus", "B. canis", "B. melitensis", and "B. suis". "B. abortus" is less virulent than "B. melitensis" and is primarily a disease of cattle. "B. canis" affects dogs. "B. melitensis" is the most virulent and
British railway milk trains train would then proceed to Waterloo, where it would reverse and return to Clapham Junction to pick up the other half of the train. The procedure was then repeated, so that the entire first milk train was unloaded between the end of evening peak traffic and the start of the following morning. The second train from Torrington would also split at Clapham Junction, but only half of its milk tanks would be propelled to Vauxhall, while the other half were dispatched to the Express Dairies depot at Morden. In the late morning, both trains' now empty milk tanks would be