index case


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Related to index case: index patient, primary case

index case

n.
1. The earliest identified occurrence of a disease or disorder, usually as part of an epidemiological investigation of a patient population or a genetic study of a family.
2. The first patient who has such a disease or disorder. Also called proband, propositus.

index case

n
(Medicine) med the first case of a disease, or the primary case referred to in a report
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.index case - the earliest documented case of a disease that is included in an epidemiological study
epidemiology - the branch of medical science dealing with the transmission and control of disease
patient - a person who requires medical care; "the number of emergency patients has grown rapidly"
References in periodicals archive ?
CDC case and contact definitions during MERS contact investigations * Status Definition Index case Laboratory-confirmed MERS-CoV infection in a person who traveled by commercial aircraft or bus while symptomatic.
7) Unrecognized seropositive individuals may include family members of the index case, who share the same source of brucellosis and similar genetic and environmental risk factors for the disease.
The index case, a 66-year-old male with hypertension and type II diabetes for more than 10 years, was admitted to the respiratory department for cough and expectoration with 3 days, aggravation with bloody sputum with 1 day on December 17, 2016.
1 The index case is interesting as it was found in a 6-year old and there was no underlying cause.
Household contacts: The individuals living in the same household or spending together many hours a day with the index case in the same living shelter.
She calculated that during the decade following an index case of HDP, life expectancy among mothers who had two or more HDP-affected pregnancies was about 49 years, life expectancy among women with a history of one HDP was 52 years, and postpartum women without HDP had a life expectancy of 55 years.
10] The index case belonged to the former type of choking phobia and organicity was ruled out by clinical examination and detail investgatons by several otorhinolaryngologists.
To a question, he said that acquisition of virus by the index case and the viral status in Pakistan are yet to be revealed.
Three of them worked as healthcare workers in the hospital where a MERS outbreak is currently occurring and had a history of caring for the index case, while another was a household contact of a previously confirmed patient.
We are tracking down the index case but what is important at this point in time is for us to be aggressive in terms of hygiene, said Garin.
Outbreak duration was calculated as the number of days between the symptom onset date of the index case and the last case in the outbreak, defined as the last case in a chain of transmission to occur before 21 days passed with no new cases.