Lesson 2 - Disease Transmission
Vector
An animal that carries and transmits a disease to another organism.
Host
An organism on which a parasite lives.
Pathogen
An organism that causes disease.
Fomite
Any inanimate object to which infectious material adheres and can be transmitted, such as clothes, tools and vehicles.
Tetanus
Cause: Bacteria Transmission: Indirect Infectious Noncontagious
Anthrax
Cause: Bacteria Transmission: Indirect (aerosol) Infectious Contagious
Hairy Heel Warts
Cause: Bacteria Transmission: Indirect (fecal, environmental conditions) Infectious Contagious
Hardware disease
Cause: Eating metal Transmission: N/A Noninfectious Noncontagious
Porcine Stress Syndrome
Cause: Genetic Transmission: N/A Noninfectious Noncontagious
Polioncephalomalacia
Cause: Lack of Thiamine in the Diet N/A Noninfectious Noncontagious
Milk fever
Cause: Lack of calcium in the diet Transmission: N/A Noninfectious Noncontagious
White Muscle Disease
Cause: Lack of selenium and/or Vitamin E in the diet Transmission: N/A Noninfectious Noncontagious
Ketosis
Cause: Low energy levels in diet Transmission: N/A Noninfectious Noncontagious
Scrapie
Cause: Prion disease Transmission: Contact with placenta and body fluids Infectious Contagious
Anterior cruciate ligament rupture
Cause: Trauma and/or genitic Transmission: N/A Noninfectious Noncontagious
Bovine Leukemia Virus
Cause: Virus Transmission: Direct (blood or vertical), Indirect (fecal) Infectious Contagious
Lumpy jaw
Cause: bacteria Transmission: Environmental Infectious Contagious
Johne's disease
Cause: bacteria Transmission: Fecal ingestion Infectious Contagious
Keratoconjunctivits
Cause: bacteria Transmission: direct infectious contagious
Source
The animals in which the infections initially occurs.
Transmission
The method by which a disease or parasite is spread.
Reservoir
The natural host of a pathogen.
Prevalence
The number or proportion of cases of a particular disease or condition present in a population at a given time.
