Parasitological - asymptomatic carriage of animal and plant parasites (worms, protozoa, bacteria - hosting, viruses - virusencyclo and others).
Parasitological can proceed without further disease, be preceded by a clinically pronounced pattern of disease or to be a consequence of the earlier illness.
Despite the absence of clinical symptoms of disease of the person, the virulence carried pathogen can be fully preserved.
This creates a reservoir of the pathogen and parasitological spreading infection or infestation. Detection of parasite-vectors especially important among workers in the food industry and child care. All persons coming to work in these institutions, pre undergo a compulsory medical examination (with special laboratory tests), pass the test on camminiamo, and afterwards periodically undergo medical examination. Be sure to regularly examination of children in preschool institutions and schools.
Hidden parasitological can lead to the development of immunity to the disease or, on the contrary, the cause of the disease. To identify carrying helminths, protozoa and other parasites carried out parasitological studies; parasitologically bacterial origin necessary bacteriological (crops) and immunological research. Parasitological revealed and experimentally by "biological samples" - infection of susceptible animals.
Fighting parasitologically - identification and subsequent treatment of the media, as well as measures on protection of people and animals against infection.
The great value has health education of the population.
Cm. also Hosting.

Parasitological - asymptomatic carriers of parasites of animals and nature. Particular cases of parasitologically are germ-carriers (see) and virusencyclo (see). P. occurs as a kind of status type of symbiosis (see)fitted between the parasite and the infected host as a result of their mutual adaptation. As the state of symbiosis P. may be strong (piroplasmosis in dogs) or, on the contrary, labile (latent P. malaria); it can be short term (latency with the return ELISA) or indefinitely long (four malaria and ricketsiosis). With clinically severe forms of infection with P. bound near the staging of variations in the form erased, "outpatient" and abortive forms of infection. P. in one form or another occurs when the vast majority of infections of bacterial, viral, protozoan and rickettsioses of origin, and with worms. The frequency and prevalence of parasitological sometimes competes with severe forms of infection (such as amoebic dysentery, q fever and other).
According to the classification there are several types or groups P. the first group includes all types of asymptomatic (without clinical manifestations) settlement body parasites (see). Related infection are referred to as "inoperante", "occult"or "dumb". Virologists allocate this hardly proceeding "subclinical" and chronically leaking "latent" forms in the proper sense. This kind of "dumb" forms of infection without disease occur, for example, when gastrointestinal protozoal infections (giardiasis, balantidia), brucellosis, Q-fever, diphtheria; quite normal when they tick-borne encephalitis, and other Second group of parasitologically constitute cases of parasitism preceding clinically expressed infection (primary long latency, such as brucellosis), or persists for "recurrent infection (secondary long latency, such as brucellosis, malaria). The third group P. are the cases of latent parasitism that develops as a result safely transferred clinically expressed infection. These include long germ-carriers and bellovedere of patients (for example, typhoid fever, cholera, diphtheria, scarlet fever, and others); they also include cases serial long latency arising after the acute form of the disease (for example, when piroplasmosis animals, when ricketsiosis in animals and people, and others). Latent settlement body parasite can cause expressed condition of stability him to superinfection (preimmunization action piroplasmosis, syphilis, tuberculosis, brucellosis and other). On the other hand, the consequence of parasitologically may be immunization (see) in the proper sense (for example, the development of antitoxic immunity against diphtheria).
Recognition P. various methods applied microscopy - by protozoal infections and worms; crops - by bacterial P.; cultivation in tissue cultures and assay - in viral infections and ricketsiosis; immunological methods (Allergy testing for tuberculosis and brucellosis; serological reactions in ricketsiosis; neutralization reaction to viral infection). Vaccination of susceptible animals in the number of infections - the main method of detecting parasitologically (for example, vaccination blood latent piroplasmosis, inoculation of the lymph nodes in the hidden forms of syphilis in rabbits and others). When the number of infections could retrospective immunodiagnostics P. (reaction Chic, diphtheria reaction dick with scarlet fever, a reaction Byrne when brucellosis, RAC with typhus and other).
Measures of struggle against parasitologically difficult and available only in cases where there is specific operating therapy (e.g., malaria, worms and other). Measures to combat P. basically coincide with those of the germ-carriers. Cm. also the Infection.