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B. melitensis is the most virulent and invasive species; it usually infects goats and occasionally sheep. B. suis is of intermediate virulence and chiefly infects pigs. Symptoms include profuse sweating and joint and muscle pain. Brucellosis has been recognized in animals and humans since the early 20th century. [7] [8]
It is the second-most common cause of blindness due to infection, after trachoma. [6] The parasitic worm is spread by the bites of a black fly of the Simulium genus. [1] Usually, many bites are required before infection occurs. [7] These flies live near rivers, hence the common name of the disease. [6]
Blepharitis, sometimes known as granulated eyelids, is one of the most common ocular conditions characterized by inflammation, scaling, reddening, and crusting of the eyelid. This condition may also cause swelling, burning, itching, or a grainy sensation when introducing foreign objects or substances to the eye.
The disease spreads from one animal to another by contact with infected feces or ingestion of infected tissue. Diarrhea , which may become bloody in severe cases, is the primary symptom. Most animals infected with coccidia are asymptomatic , but young or immunocompromised animals may suffer severe symptoms and death.
The disease is most common in tropical areas of the world but may occur anywhere. [7] Outbreaks may arise after heavy rainfall. [7] The disease was first described by physician Adolf Weil in 1886 in Germany. [17] [18] Infected animals may have no, mild or severe symptoms. [19] These may vary by the type of animal.
Saliva from an infected animal can also transmit rabies if the saliva comes into contact with the eyes, mouth, or nose. [1] Globally, dogs are the most common animal involved. [1] In countries where dogs commonly have the disease, more than 99% of rabies cases in humans are the direct result of dog bites. [11]
Helminthiasis, also known as worm infection, is any macroparasitic disease of humans and other animals in which a part of the body is infected with parasitic worms, known as helminths. There are numerous species of these parasites , which are broadly classified into tapeworms , flukes , and roundworms .
The symptoms are usually severe and can be fatal if not treated. It is most common in young adult dogs of any breed, but especially small dogs such as the Toy Poodle and Miniature Schnauzer. [6] Gallbladder mucocele is a disease whereby the gallbladder becomes extended with bile and mucus, which can lead to the blockage of bile outflow from the ...