🔴Listeriosis
🔻Listeriosis is a sporadic bacterial infection that affects a wide range of animals, including man and birds.
🔻It is principally caused by Listeria monocytogenes, and occasionally by L.ivanovii.
🔻The natural habitat is soil and the mammalian intestinal tract and vegetation and silage become contaminated with soil and/or feces.
🔻Humans acquire infection by consuming not well cooked animal products.
🟡Clinical Symptoms
🔘The characteristic symptoms are
1_Encephalitis or Meningoencephalitis
2_Abortion in adult cattle
3_Perinatal mortality
4_Septicemia
5_Fever in neonatal ruminants.
☑️Animals with encephilitis propel themselves into corners, lean against stationary objects, or circle toward the affected side.
☑️Facial paralysis, and inability to control balance are also observed.
🔴Listeria Infection causes of abortion in a cow
🟥At any stage of gestation
🟦Sporadic abortion.
🟧The fetal liver is shrunken and gray and contains pinpoint microabscesses.
🟪Necrosis of the cotyledons and intercotyledonary area Culture of Listeria from fetus or placenta.
🔬Diagnosis
1_Isolation of L.monocytogenes from brain🧠
2_Aborted placenta and fetus 3_Occasionally from the spinal fluid, nasal discharge,urine, feces, and milk of clinically ill ruminants.
💉Treatment and Prevention💉
💉Supportive treatment
1_Fluid, electrolyte
2_supplemental feeding for severe cases.
💊Drug treatment
⭕️First line
1_Procaine penicillin G, IM or SC q 12 h for
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