Similarly, transmission from one host to another is related to the movement of fluids such as:
______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ Most contagious diseases are species-specific. This means that they only cause disease in a single species. Other diseases are interspecific. Interspecific diseases are contagious between two or more species. For example, salmonellosis, infection of the gastrointestinal tract by Salmonella spp. bacteria, causes disease in most mammals. refers to the specific transmission of an interspecific disease between animals and humans.
Infectious Agents
The common groups of infectious pathogens are viruses, bacteria, fungi, protozoa, nematodes and ectoparasites. All of these pathogens use the resources of the host body to replicate and proliferate. Each group has unique characteristics that determine the mechanisms by which they cause disease. Regardless of the agent, there are some common systemic signs and symptoms of infection that include: pyrexia, tachycardia, tachypnea, anorexia, lethargy, weight loss & leukocytosis.
Outcome of infection is determined by:
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The Possible outcomes of infection include:
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