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The index case or patient zero is the first documented patient in a disease epidemic within a population, [1] or the first documented patient included in an epidemiological study. [2] It can also refer to the first case of a condition or syndrome (not necessarily contagious) to be described in the medical literature, whether or not the patient ...
An index case, also known as a patient zero, is an individual believed to be the initial case of a condition or syndrome as described in medical literature. Pages in category "Index cases" The following 9 pages are in this category, out of 9 total.
[17] "Beliefs about Patient Zero," Worobey concludes, "are unsupported by scientific data." [17] Worobey's paper, published in Nature in October 2016, finds "neither biological nor historical evidence that he was the primary case in the United States or for subtype B as a whole."
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He was once labelled "Patient Zero" in a 1984 cluster study and identified as such by author Randy Shilts. This claim has been refuted through subsequent scientific scrutiny and historical re-evaluation. Grethe Rask — A Danish physician infected in 1964 in Congo-Léopoldville (now DR Congo) or in 1972 while performing surgery. Died in 1977
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Index case/Patient zero – first identified case in an outbreak investigation, serving as a guide to public health interventions. Infectious period – time interval during which an infected individual can transmit the pathogen to other susceptible hosts.
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