Property talk:P1660

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has index case
initial patient in the population of an epidemiological investigation

Description	primary case, patient zero: initial patient in the population of an epidemiological investigation
Represents	index case (Q1639798)
Data type	Item
Domain	According to this template: disease outbreak (Q3241045) According to statements in the property: disease outbreak (Q3241045) When possible, data should only be stored as statements
Allowed values	human (Q5) (note: this should be moved to the property statements)
Example	Ebola virus disease in the United States (Q17486597) → Thomas Eric Duncan (Q18249266)
Source	Health institutes, e.g. World Health Organization, US Centers for Disease Control and Prevention (note: this information should be moved to a property statement; use property source website for the property (P1896))
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Database reports/Constraint violations/P1660 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 29 Main statement 28 96.6% of uses Qualifier 1 3.4% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “disease outbreak (Q3241045)”: item must contain property “instance of (P31)” with classes “disease outbreak (Q3241045)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1660#Type Q3241045, SPARQL

Value type “human (Q5)”: This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value human (Q5) (or a subclass thereof). (Help)

List of violations of this constraint: Database reports/Constraint violations/P1660#Value type Q5, hourly updated report, SPARQL

Property “sex or gender (P21)” declared by target items of “has index case (P1660)”: If [item A] has this property with value [item B], [item B] is required to have property “sex or gender (P21)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1660#Target required claim P21, SPARQL, SPARQL (by value)

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1660#Single value, SPARQL

Inverse property of “index case of (P1677)”:
if [item A] has this property (has index case (P1660)) linked to [item B],
then [item B] should also have property “index case of (P1677)” linked to [item A]. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1660#inverse, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P1660#Scope, hourly updated report, SPARQL

Property “medical condition (P1050)” declared by target items of “has index case (P1660)”: If [item A] has this property with value [item B], [item B] is required to have property “medical condition (P1050)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1660#Target required claim P1050, SPARQL, SPARQL (by value)

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1660#Entity types

Gender neutral labels in French

Following this request for comments, the French label now includes the male and the female form. PAC2 (talk) 17:13, 17 June 2022 (UTC)