A

Hypersensitivity especially in animals to a substance, such as foreign protein or a drug, that is caused by exposure to a foreign substance after a preliminary exposure.

Any of a large group of viruses transmitted by arthropods, such as mosquitoes and ticks, that include the causative agents of encephalitis, yellow fever, and dengue.

The only genus in the family arenaviridae.

Any of numerous invertebrate animals, including insects.

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B

An acute infection of the intestine; characterized by diarrhea, fever and abdominal pains.

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C

Dead and decaying flesh.

An acute intestinal infection caused by ingestion of contaminated water or food; and characterized by profuse watery diarrhea, vomiting, muscle cramps, severe dehydration, and depletion of electrolytes.

An infection caused by Colorado tick fever virus and transmitted to humans by ticks; the disease is rarely, if ever, fatal.

Of, relating to, or characterized by a symbiotic relationship in which one species is benefited while the other is unaffected.

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D

A colorless, oily liquid, that has a mild odor, and is used as an insect C 12 H 17 NO repellent. (N,N-diethyl-meta-toluamide)

An infectious viral disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints.

A North American mouse (Peromyscus maniculatus) having white feet and underparts, and a long, bicolored tail.

A filarial worm (Dirofilaria immitis) transmitted by mosquitoes and parasitic in the heart and associated blood vessels of dogs.

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E

A parasite, such as a flea, that lives on the exterior of another organism.

An infectious disease transmitted by the bite of an infected tick.

Native to or confined to a certain region. Of disease or anything resembling a disease; constantly present to greater or lesser extent in a particular locality.

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F

Any of various small, wingless, bloodsucking insects of the order Siphonaptera that have legs adapted for jumping and are parasitic on warm-blooded animals.

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G

Any of several burrowing or terrestrial squirrels, of the genus Citellus or Spermophilus, including many species that hibernate during the winter.

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H

Any of a group of viruses carried by rodents that cause epidemic hemorrhagic fever and severe respiratory infections in humans.

The circulatory fluid of certain invertebrates, analogous to blood in arthropods and to lymph in other invertebrates.

Any of several social bees of the genus Apis that produce honey.

A common gray or brownish-gray mouse (Mus musculus) that lives in or near buildings and often carries disease.

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I

The time from the moment of exposure to the development of the clinical manifestations of a particular infectious disease.

A stage of an insect or other arthropod between molts.

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J

Yellowish discoloration of the whites of the eyes, skin, and mucous membranes caused by deposition of bile salts in these tissues.

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L

Any young insect from the time that it hatches from the egg until it becomes a pupa, or chrysalis.

An inflammatory disease characterized by a rash with joint swelling and fever; caused by the bite of a deer tick.

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M

An infectious disease characterized by cycles of chills, fever, and sweating, caused by a Plasmodium protozoan which is transmitted to humans by the bite of an infected female Anopheles mosquito.

A change in the form and often habits of an animal during normal development after the embryonic stage. Complete metamorphosis: The complete form of metamorphosis in which an insect passes through four separate stages of growth, as embryo, larva, pupa, and imago. Incomplete metamorphosis: A life cycle of certain insects, such as crickets and grasshoppers, characterized by the absence of a pupal stage between the immature and adult stages.

Any of various two-winged insects of the family culicidae, in which the female of most species is distinguished by a long proboscis for sucking blood.

A comparatively mild, acute, endemic form of typhus caused by the microorganism Rickettsia typhii, transmitted from rats to humans by fleas.

A disease resulting from infestation of tissue by fly larvae.

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N

Any of several worms of the phylum Nematoda, having unsegmented, cylindrical bodies, often narrowing at each end, and including parasitic forms such as the hookworm and pinworm. Also called roundworm.

The medical science that deals with the nervous system (Neurological) and disorders affecting it.

Of, relating to, or occurring in the night.

The common domestic rat (Rattus norvegicus) , which is highly destructive and found worldwide, especially in populated areas.

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O

An infestation of the ear canal.

The depositing of eggs, especially by insects.

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P

A highly fatal infectious disease that is caused by the bacterium Yersinia pestis, is transmitted primarily by the bite of a rat flea, and occurs in bubonic, pneumonic, and septicemic forms.

A protozoan of the genus Plasmodium, which includes the parasites that cause malaria.

An acute or chronic disease marked by inflammation of the lungs and caused by viruses, bacteria, or other microorganisms and sometimes by physical and chemical irritants.

A hollow organ or tube attached to the head, or connected with the mouth.

To grow or multiply by rapidly producing new tissue, parts, cells, or offspring.

The nonfeeding stage between the larva and adult in the metamorphosis of insects, during which the larva typically undergoes complete transformation within a protective cocoon or hardened case.

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Q

The act or an instance of seeking or pursuing something.

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R

Defective function of the kidneys, with accumulation of waste products (particularly nitrogenous) in the blood.

Of, on, or relating to the banks of a natural course of water.

An acute infectious disease that is caused by a microorganism (Rickettsia rickettsii) transmitted by ticks, is characterized by muscular pains, high fever, and skin eruptions, and is endemic throughout North America.

Common household pest originally from Asia that has spread worldwide.

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S

Infection with salmonellae marked by intestinal problems and fever and caused especially by eating certain improperly stored or undercooked foods.

Viral encephalitis occurring in parts of North America and transmitted by a Culex mosquito.

To post as a guard.

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T

Any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals.

A flaccid, ascending and sometimes fatal paralysis caused by hard ticks.

Passage of parasites or infective agents from the maternal body to eggs within the ovaries; commonly used to describe certain arthropods, to explain the ability of larvae of the next generation to transmit disease pathogens.

An infectious disease caused by the bacterium Francisella tularensis that chiefly affects rodents but can also be transmitted to humans through the bite of various insects or contact with infected animals. In humans, the disease is characterized by intermittent fever and swelling of the lymph nodes.

An acute, highly infectious disease caused by a bacterium.

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V

An organism, such as a mosquito or tick that carries disease-causing microorganisms from one host to another. California Health and Safety Code defines a vector as any animal capable of transmitting the causative agent of human disease or capable of producing human discomfort or injury, including but not limited to mosquitoes, flies, mites, other arthropods and rodents and other vertebrates.

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W

Feeds on dusky-footed wood rat and bites humans; principal vector for Lyme disease in western United States especially northern California.

An equine encephalomyelitis found in the western U.S. and parts of South America, transmitted by mosquitoes and caused by the western equine encephalomyelitis virus.

A species of flavivirus, one of the Japanese encephalitis virus group which produces encephalitis experimentally when inoculated into some rodents, chicks, birds, or monkeys. In humans, it is seen most frequently in Africa, Asia, and Europe presenting as a silent infection or undifferentiated fever. It is transmitted by Culex mosquitoes.

The larva or pupa of a mosquito.

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Y

An infectious tropical disease caused by an arbovirus transmitted by mosquitoes of the genera Aedes.

Any of several small wasps of the family Vespidae that have yellow and black markings and usually nest in the ground.

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