INFECTIOUS DISEASES : FOOT AND MOUTH DISEASE (ARNTE ЕРIZOОТIСАЕ) - etiology, pathogenesis, symptoms and course of, recognition, prediction and prevention
Etiology. The causative agent belongs to the group of filterable viruses with a pronounced dermo and epitheliotropic.
Epidemiology. Foot and mouth disease belongs to the group of zoonoses. Patients artiodactyl animals excrete the virus content of bubbles, saliva and milk. Milk plays a dominant role in human infection (65% of infections), then the frequency should contact with sick animals (34%); infection from dairy products usually plays a small role in the spread of infection (less than 1%).
The pathogenesis. People are relatively insensitive to the FMD virus. With the introduction of the virus into the skin or mucous membranes of the respiratory tract or the digestive organs, the virus after breeding is carried by the blood stream and is recorded on mucous membranes and in the skin with selective localization in the lips, fingers and toes, nail bed (Rylko-hoof disease), where and are formed reactive changes. Incubation is from 2 to 6 days.
Symptoms. Fever, headache, General weakness, blisters around the mouth, the oral mucosa and nail bed.
The disease is painful, but benign. With abundant precipitation on the lips and oral mucosa - inability to swallow, strong salivation. Torticollis is impermanent. Erythematous plaques and vesicles at a bed of nails and the interdigital folds, mainly semilunar shape. Skin elements and other parts of the body, especially at the local irritation of the skin friction. The duration of the disease is about 2 weeks. The temperature of the reaction is significantly shorter (3 to 5 days). Blood eosinophilia.
Recognition is given epidemiological considerations. Control the infection of the Guinea pig. Possible mixing with pemphigus and exudative erythema.
Sanitary and veterinary control for dairy farms. Eating only boiled milk.
Intravenous orally as tablets (0,3 - 0,45 one introduction). Osarsol (0.25 x 4 a day). Local - lubrication sores 5% solution of silver nitrate, rinsing with 1% solution of potassium permanganate, a 3% solution of borax, a 3% solution of hydrogen peroxide. Symptomatic means.