Brucellosis

Brucellosis, also known as wave fever, is a zoonotic infectious disease caused by brucella. Its clinical features are chronic fever, hyperhidrosis, joint pain, orchitis, and hepatosplenomegaly. The bacterium is Gram-negative Brevibacterium, which is divided into Brucella malta (sheep type), Brucella abortus (bovine type), Brucella suis (pig type) according to biochemical and serological responses, and also forest mouse type , Sheep epididymis and canine. People infected are mainly sheep, cattle and pigs. Its pathogenicity is the strongest in sheep type, followed by pig type, and weakest in cattle type. Sources of infection are diseased sheep, cattle, and pigs. Pathogens exist in the tissues, urine, milk, birth canal secretions, amniotic fluid, placenta, and amniotic bodies of sick animals. Exposure to infection can also be transmitted through digestion and respiratory tract. The population is generally susceptible and can be repeatedly infected or chronic.