HM 101 Lecture Notes - Lecture 7: Asymptomatic Carrier, Neonatal Tetanus, Chemical Substance

• School: MSU
• Department: Human Medicine, College Course
• Course: HM 101
• Professor: P.Lambert

Document Summary

Agent: a factor, such as a microorganism, chemical substance, or form of radiation, whose presence, excessive presence, or (in deficiency diseases) relative absence is essential for the occurrence of a disease. Carrier: a person or animal without apparent disease who harbors a specific infectious agent and is capable of transmitting the agent to others. The carrier state may occur in an individual with an infection that is inapparent throughout its course (known as asymptomatic carrier), or during the incubation period, convalescence, and postconvalescence of an individual with a clinically recognizable disease. The carrier state may be of short or long duration (transient carrier or chronic carrier). Elimination of a disease: reduction to zero of the incidence of a specified disease in a defined geographical area as a result of deliberate efforts; continued intervention measures are required.