Translations:Basic Field Epi: Course Resource Book/211/en

For example:

  • Bovine babesiosis is a parasite spread by tick bites that is capable of causing clinical disease in cattle. Animals that recover from infection have a life long immunity.
  • Bovine ephemeral fever (BEF) is a viral disease of cattle spread by mosquito bites. It causes fever and lameness and weight loss in infected animals. Recovered animals have a lifelong immunity to infection with the same strain.
  • Cattle that develop bacterial infection of the udder (mastitis) may recover with or without treatment but do not have long immunity and may get re-infected with the same bacteria at some time in the future.
  • Some vaccines are capable of producing long lasting immunity to a disease while other vaccines produce short acting immunity and animals must be re-vaccinated at regular intervals to protect against particular diseases.