In diseases such as diphtheria and streptococcal infection, in Communicable period-The time during which an infectiousĪgent may be transferred directly or indirectly from an infected person to another person, from an infected animal to humans, orįrom an infected person to animals, including arthropods. Communicable disease-An illness due to a specific infectious agent or its toxic products that arises through transmission of thatĪgent or its products from an infected person, animal or inanimate reservoir to a susceptible host either directly or indirectly throughĪn intermediate plant or animal host, vector or the inanimate environment. In which infectious agents may find favorable conditions for surviving or multiplying.ĥ. Water, soap or suitable detergent or by vacuum cleaning, of infectious agents and of organic matter from surfaces on which and Cleaning-The removal by scrubbing and washing, as with hot Use of a chemical to treat a clinically manifest disease or to limit its further progress.Ĥ. Chemotherapy, on the other hand, refers to The carriage of a specific infectious agent to prevent transmission and disease in others. Chemoprophylaxis-The administration of a chemical, includingĪntibiotics, to prevent the development of an infection or the progression of an infection to active manifest disease, or to eliminate (Synonyms: fatality rate, fatality percent-age, case-fatality ratio)ģ. The case-fatality rate must be clearly differentiated from the mortality rate (q.v.). This term is most frequently applied toĪ specific outbreak of acute disease in which all patients have been followed for an adequate period of time to include all attributableĭeaths. Case-fatality rate-Usually expressed as the percentage of personsĭiagnosed as having a specified disease who die as a result of that illness within a given period. (temporary or transient carrier, or chronic carrier).Ģ. Under either circumstance the carrier state may be of short or long duration Incubation period, convalescence and postconvalescence of an individual with a clinically recognizable disease (commonly knownĪs an incubatory or convalescent carrier). Infection that is inapparent throughout its course (commonly known as healthy or asymptomatic carrier), or during the The carrier state may exist in an individual with an Without discernible clinical disease and serves as a potential source of infection. Carrier-A person or animal that harbors a specific infectious agent (Technical meaning of terms used in the text)ġ.
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