index case

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Related to index cases: 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 ?
In this study, we screened pediatric and adult family members of index cases with brucellosis to detect unrecognized infected family members.
Using their home address, all house hold members of the index cases (sharing one kitchen) were identified.
THE LARGEST MEASLES OUTBREAK in the United States in more than 2 decades, with an attack rate several orders of magnitude larger than the usual annual nationwide incidence of the disease, could have been better controlled if clinicians had recognized the index cases sooner, according to a report published in the New England Journal of Medicine.
Two index cases developed in young Amish men (aged 22 and 23 years) who had just returned from a church-sponsored trip to the Philippines to perform charitable work among victims of a typhoon.
To measure improvements in response indicators and outcomes over time, data from investigations of 12 of 15 outbreaks in remote areas with illness onset dates of index cases during July 16-November 20, 2014, were analyzed.
In particular, index cases, defined as those that could not be linked to an already known transmission chain, had a reproduction number of [R.
This study reports the presence of index cases linked to newly diagnosed leprosy patients, in the absence of active contact surveillance.
Current index cases for quality assessment focus on the highest volume diagnoses (i.
Table 01: Inbreeding rate (Generation of index cases and generation of their parents) Generation Endogamy % Exogamy % Total GSC 61,25 38,75 100 GHP 98,67 1,33 100 GWP 92,21 7,79 100 Table 02: Comparison of inbreeding rates ([N.
The 1978 data were presented separately for contacts of "lepromatous" (three arms: placebo, low dose, and usual dose) and of "non-lepromatous" index cases (two arms: placebo and dapsone).
influezae infections, nor does it have a recommended regimen for prophylactic treatment of close contacts of index cases.