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ability of a pathogen to overcome the defensive powers of a host and to induce disease
anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies
a disease that is constantly present to a greater or lesser degree in people of a certain class or in people living in a particular location
The state where the disease is continuously present in a population of animals with no serious outbreaks
indirect transmission by a vector in which the infectious agent does not undergo physiologic changes inside the vector
The transmission of a pathogen from one host to another when the pathogen reproduces in the vector.
life cycle events triggered by environmental cues may be altered. trees "leaf out" earlier. spring arrives earlier in some places. flowers appearing out of season
when the infection is transmitted by stages from generation to generation of ticks
ability of a vector to acquire a pathogen and to successfully transmit it to another susceptible host
Reproductivly isolated species that are so similar morphologically that they are difficult or impossivle to distinguish using morphological characters
any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
a population survey using serologic test to screen for exposure and immunity to an infectious disease
a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens
an immunity resulting from antibodies that are conveyed naturally through the placenta to a fetus or artificially by injection of a serum containing antibodies
Contain only certain proteins from the organism, can not cause dz, a lyme vaccine and FeLV are available
a system of refrigeration used for keeping and distributing vaccines at the correct temperature and in good condition
primary prevention of infectious diseases by administering antimicrobial drugs to prevent infection
the working together of two things (muscles or drugs for example) to produce an effect greater than the sum of their individual effects
a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die
any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease
a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin
injection of pre-formed abs into patient (can be from another species or maternal abs)
exposing susceptible individuals to antigens associated with an infectious disease process that do not cause the disease but rather induce an immune response that protects against subsequent infection
•natural substance normally found present in the stomach essential to the metabolism of vitamin B 12 .
Able to be transmitted between people or species; contagious or catching; talkative or expansive; readily communicated
particles of dried secretions from the mouth and nose that may float in the air for a considerable amount of time over long distances
any inanimate object (as a towel or money or clothing or dishes or books or toys etc.) that can transmit infectious agents from one person to another
•The transmission of microorganisms between generations of hosts via the eggs
a person infected with a pathogenic microorganism but with no symptoms of the infection
An individual capable of transmitting an infectious agent to others during the incubation period of the disease.
An individual capable of transmitting an infectious agent to others during the incubation period of the disease
type of incidence rate defined as the proportion of persons exposedto an agent who develops the disease, usually for a limited time in a specific population
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