Disease Causative Agents

All of the above are the cattle diseases.

West Nile virus (WNV) is a virus of the family Flaviviridae. It mainly infects birds, but is known to infect humans, horses, dogs, cats, bats, chipmunks, skunks, squirrels, domestic rabbits, crocodiles and alligators.

Pseudorabies is a viral disease in swine that is endemic in most parts of the world. It is caused by porcine herpesvirus 1, which is also called pseudorabies virus (PRV) or suid herpesvirus-1 (SHV-1) and is also known as Aujeszky's disease, and in cattle as mad itch.

Pertussis or whooping cough is a respiratory infection caused by the bacterium Bordetella pertussis. The illness frequently begins with cold-like symptoms but evolves into a severe cough in roughly seven to 14 days. Pneumonia and infection of the brain may develop as complications of whooping cough.

Tetanus, also known as lockjaw, is a serious but preventable disease that affects the body's muscles and nerves. It typically arises from a skin wound that becomes contaminated by a bacterium called Clostridium tetani, which is often found in soil.

Leptospirosis is also known as Weil's syndrome, .It is a disease caused by infection with bacteria of the genus Leptospira that affects humans as well as other mammals, birds, amphibians, and reptiles.

Waterhouse-Friderichsen syndrome (WFS) or hemorrhagic adrenalitis is a disease of the adrenal glands most commonly caused by the bacterium Neisseria meningitidis. The infection leads to massive hemorrhage into one or (usually) both adrenal glands.

Shigella is a genus of Gram-negative, nonspore forming, rod-shaped bacteria closely related to Escherichia coli and Salmonella. It is only naturally found in humans and apes. During infection, it typically causes dysentery.

Gonorrhea is a common sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae. The usual symptoms in men are burning with urination and penile discharge.

Necrotizing enterocolitis (NEC) is a medical condition primarily seen in premature infants, where portions of the bowel undergo necrosis (tissue death).

Tularemia is also known as rabbit fever. It is a serious infectious disease caused by the bacterium Francisella tularensis. A Gram-negative, nonmotile coccobacillus, the bacterium has several subspecies with varying degrees of virulence.

Brucellosis is a highly contagious zoonosis caused by ingestion of unsterilized milk or meat from infected animals or close contact with their secretions.

H5N1 (Influenza A virus subtype H5N1) is the specific viral strain responsible for avian influenza or bird flu. This subtype is highly pathogenic and can transmit from birds to humans. The other combinations mentioned (H4N4, H6N8, H9N7) are not the causative agents of bird flu.

Tropical sprue is a malabsorption disease commonly found in the tropical regions, marked with abnormal flattening of the villi and inflammation of the lining of the small intestine.

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