VETS20015 Lecture Notes - Lecture 10: Herd Immunity, Endospore, Viral Envelope

• School: University of Melbourne
• Department: Veterinary Medicine
• Course: VETS20015
• Professor: Andrew Fisher

Document Summary

Lecture 1- interactions between infectious agents and other determinants of health. General factors (likelihood animal will get infectious diease): housing/overcrowding, nutrition, age, genetics. Immunity: after infection, previous exposure, vaccination- artificial pre-exposure, herd immunity, the more contagious a disease is, the higher level of herd immunity is needed. Impacts the pattern of disease: how you manage infectious diseases, where would you expect to find microbes, environment, other animals, the animal itself. Management factors: rotation of feeding bins, creep feeding, faecal collection, harrowing. Irrigation: pasture treatments, group size, farm size, preventive health measure, other diseases. Soil-borne virulent r. equi: no environmental variable had a significant effect on soil-borne virulent. R. equi concentration: soil-borne virulent r. equi was not associated with prevalence of r. equi disease, amount of bacteria in soil- had no association with prevalence of disease in foals. If they are in the pens for a long time- likelihood of exposure goes up. Immunity: likelihood of exposure, housing/over crowding, nutrition, age.