Lecture 5: Zoonotic Diseases PDF

Staphylococcosis ---------------- ETIOLOGY: BACTERIAL ------------------- HOSTS ----- TRANSMISSION ------------ COLIBACILLOSIS. ---------------- ETIOLOGY: BACTERIAL ------------------- HOSTS ----- The most common reservoir of *E. coli* O157:H7 is cattle. Other animals that have been identifie...

Staphylococcosis ---------------- ETIOLOGY: BACTERIAL ------------------- HOSTS ----- TRANSMISSION ------------ COLIBACILLOSIS. ---------------- ETIOLOGY: BACTERIAL ------------------- HOSTS ----- The most common reservoir of *E. coli* O157:H7 is cattle. Other animals that have been identified as sources of human infection are deer and horses. None of these animals gets sick from harboring *E. coli* 0157:H7 --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transmission ------------ contaminated ground beef. Meat can be contaminated with feces on its surface. **Diagnosis** of E. coli 0157:H7 is based on finding the bacterium in feces by culturing the feces in a special medium. This medium is not normally used to culture E. coli, so it has to be specially requested. Any person developing sudden watery or bloody diarrhea should be tested for E. coli 0157:H7. SALMONELLOSIS ============= ETIOLOGY: BACTERIAL ------------------- HOSTS ----- TRANSMISSION ------------ DIAGNOSIS --------- In people, salmonellosis is diagnosed through laboratory tests that include culturing the feces of sick people. Serologic testing is also used. Once salmonellosis has been diagnosed, further testing to identify which serotype is involved will help determine which antibiotic can be used, if treatment becomes necessary. In animals, diagnosis is based on fecal culture and serologic testing. MacConkey agar S.S. agar XLD agar =================================