Application of Incubation period is all except:
|A||Differentiate between primary and secondary case|
|B||To find out the time for isolation|
|C||To find out the time for quarantine|
|D||To prevent the infection to the contacts of infected person|
To find out the time for isolation we need to know the period of communicability of the disease and not its incubation period. For the other options knowledge of the IP would be important.
COMMUNICABLE PERIOD is defined as the time during which an infectious agent may be transferred directly or indirectly from an infected person to another person, from an infected animal to man, or from an infected person to an animal, including arthropods. It varies in different diseases. Communicability of some diseases can be reduced by early diagnosis and treatment. Some diseases are more communicable during the incubation period than during actual illness.
Isolation: - Separation, for the period of communicability of infected persons (cases) or animals from others in and in such places and under such conditions, as to prevent or limit the direct or indirect transmission of the infectious agent from those infected to those who are susceptible, or who may spread the agents to others.
Quarantine (40 day detention) is the restriction of activities of well persons (HEALTHY CONTACTS) or animals who have been exposed to a communicable disease or are traveling from a disease-endemic-zone to a non-diseased-area for a period of time equivalent to the LONGEST KNOWN INCUBATION PERIOD of that specific communicable disease. This is done to prevent contact with individuals who are not exposed to a communicable disease and to prevent transmission to an area free of disease. It was for the first time applied for Plague.
Modified quarantine refers to selective partial limitation of movement of contacts of communicable diseases to protect susceptible individuals from contracting disease. Exclusion of children with chickenpox and measles from regular school is an example.