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Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/chng.md
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{: .no_toc}
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***Source name:**`chng`
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***First issued by Delphi:** November 4, 2020
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***Earliest issue available:** November 4, 2020
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***Number of data revisions since May 19, 2020:** 0
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***Date of last change:** Never
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***Available for:** county, hrr, msa, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | Description |
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| --- | --- |
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|`smoothed_outpatient_covid`| Estimated percentage of outpatient doctor visits with confirmed COVID-19, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother <br/> **First Available:** 2020-02-01 |
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|`smoothed_adj_outpatient_covid`| Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment) <br/> **First Available:** 2020-02-01 |
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|`smoothed_outpatient_cli`| Estimated percentage of outpatient doctor visits primarily about COVID-related symptoms, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother <br/> **First Available:** 2020-02-01 |
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|`smoothed_adj_outpatient_cli`| Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment) <br/> **First Available:** 2020-02-01 |
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|`smoothed_outpatient_covid`| Estimated percentage of outpatient doctor visits with confirmed COVID-19, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_adj_outpatient_covid`| Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment) <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_outpatient_cli`| Estimated percentage of outpatient doctor visits primarily about COVID-related symptoms, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_adj_outpatient_cli`| Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment) <br/> **Earliest date available:** 2020-02-01 |
Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/doctor-visits.md
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***Source name:**`doctor-visits`
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***First issued by Delphi:** April 29, 2020
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***Earliest issue available:** April 29, 2020
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***Number of data revisions since May 19, 2020:** 1
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***Date of last change:** November 9, 2020
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***Available for:** county, hrr, msa, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | Description |
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| --- | --- |
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|`smoothed_cli`| Estimated percentage of outpatient doctor visits primarily about COVID-related symptoms, based on data from health system partners, smoothed in time using a Gaussian linear smoother <br/> **First Available:** 2020-02-01 |
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|`smoothed_adj_cli`| Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment) <br/> **First Available:** 2020-02-01 |
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|`smoothed_cli`| Estimated percentage of outpatient doctor visits primarily about COVID-related symptoms, based on data from health system partners, smoothed in time using a Gaussian linear smoother <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_adj_cli`| Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment) <br/> **Earliest date available:** 2020-02-01 |
Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/ght.md
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***Source name:**`ght`
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***First issued by Delphi:** April 29, 2020
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***Earliest issue available:** April 29, 2020
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***Number of data revisions since May 19, 2020:** 0
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***Date of last change:** Never
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***Available for:** dma, hrr, msa, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | Description |
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| --- | --- |
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|`raw_search`| Google search volume for COVID-related searches, in arbitrary units that are normalized for population <br/> **First Available:** 2020-02-01 |
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|`smoothed_search`| Google search volume for COVID-related searches, in arbitrary units that are normalized for population, smoothed in time as [described below](#smoothing) <br/> **First Available:** 2020-02-01 |
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|`raw_search`| Google search volume for COVID-related searches, in arbitrary units that are normalized for population <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_search`| Google search volume for COVID-related searches, in arbitrary units that are normalized for population, smoothed in time as [described below](#smoothing) <br/> **Earliest date available:** 2020-02-01 |
Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/google-survey.md
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***Source name:**`google-survey`
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***First issued by Delphi:** April 29, 2020
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***Earliest issue available:** April 29, 2020
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***Number of data revisions since May 19, 2020:** 0
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***Date of last change:** Never
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***Available for:** county, hrr, msa, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | Description |
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| --- | --- |
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|`raw_cli`| Estimated percentage of people who know someone in their community with COVID-like illness <br/> **First Available:** 2020-04-11 |
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|`smoothed_cli`| Estimated percentage of people who know someone in their community with COVID-like illness, smoothed in time [as described below](#smoothing) <br/> **First Available:** 2020-04-11 |
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|`raw_cli`| Estimated percentage of people who know someone in their community with COVID-like illness <br/> **Earliest date available:** 2020-04-11 |
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|`smoothed_cli`| Estimated percentage of people who know someone in their community with COVID-like illness, smoothed in time [as described below](#smoothing) <br/> **Earliest date available:** 2020-04-11 |
Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/google-symptoms.md
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***Source name:**`google-symptoms`
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***First issued by Delphi:** November 30, 2020
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***Earliest issue available:** November 30, 2020
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***Number of data revisions since May 19, 2020:** 0
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***Date of last change:** Never
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***Available for:** county, MSA, HRR, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | Description |
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| --- | --- |
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|`anosmia_raw_search`| Google search volume for anosmia-related searches, in arbitrary units that are normalized for overall search users <br/> **First Available:** 2020-02-13 |
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|`anosmia_smoothed_search`| Google search volume for anosmia-related searches, in arbitrary units that are normalized for overall search users, smoothed by 7-day average <br/> **First Available:** 2020-02-20 |
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|`ageusia_raw_search`| Google search volume for ageusia-related searches, in arbitrary units that are normalized for overall search users <br/> **First Available:** 2020-02-13 |
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|`ageusia_smoothed_search`| Google search volume for ageusia-related searches, in arbitrary units that are normalized for overall search users, smoothed by 7-day average <br/> **First Available:** 2020-02-20 |
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|`sum_anosmia_ageusia_raw_search`| The sum of Google search volume for anosmia and ageusia related searches, in an arbitrary units that are normalized for overall search users <br/> **First Available:** 2020-02-13 |
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|`sum_anosmia_ageusia_smoothed_search`| The sum of Google search volume for anosmia and ageusia related searches, in an arbitrary units that are normalized for overall search users, smoothed by 7-day average <br/> **First Available:** 2020-02-20 |
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|`anosmia_raw_search`| Google search volume for anosmia-related searches, in arbitrary units that are normalized for overall search users <br/> **Earliest date available:** 2020-02-13 |
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|`anosmia_smoothed_search`| Google search volume for anosmia-related searches, in arbitrary units that are normalized for overall search users, smoothed by 7-day average <br/> **Earliest date available:** 2020-02-20 |
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|`ageusia_raw_search`| Google search volume for ageusia-related searches, in arbitrary units that are normalized for overall search users <br/> **Earliest date available:** 2020-02-13 |
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|`ageusia_smoothed_search`| Google search volume for ageusia-related searches, in arbitrary units that are normalized for overall search users, smoothed by 7-day average <br/> **Earliest date available:** 2020-02-20 |
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|`sum_anosmia_ageusia_raw_search`| The sum of Google search volume for anosmia and ageusia related searches, in an arbitrary units that are normalized for overall search users <br/> **Earliest date available:** 2020-02-13 |
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|`sum_anosmia_ageusia_smoothed_search`| The sum of Google search volume for anosmia and ageusia related searches, in an arbitrary units that are normalized for overall search users, smoothed by 7-day average <br/> **Earliest date available:** 2020-02-20 |
Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/hospital-admissions.md
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***Source name:**`hospital-admissions`
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***First issued by Delphi:** June 21, 2020
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***Earliest issue available:** June 21, 2020
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***Number of data revisions since May 19, 2020:** 1
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***Date of last change:** October 20, 2020
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***Available for:** county, hrr, msa, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | Description |
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| --- | --- |
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|`smoothed_covid19_from_claims`| Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on claims data from health system partners, smoothed in time using a Gaussian linear smoother <br/> **First Available:** 2020-02-01 |
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|`smoothed_adj_covid19_from_claims`| Same as `smoothed_covid19_from_claims`, but with systematic day-of-week effects removed using [the same mechanism as in `doctor-visits`](doctor-visits.md#day-of-week-adjustment) <br/> **First Available:** 2020-02-01 |
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|`smoothed_covid19`| Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on electronic medical record and claims data from health system partners, smoothed in time using a Gaussian linear smoother. _This signal is no longer updated as of 1 October, 2020._ <br/> **First Available:** 2020-02-01 |
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|`smoothed_adj_covid19`| Same as `smoothed_covid19`, but with systematic day-of-week effects removed using [the same mechanism as in `doctor-visits`](doctor-visits.md#day-of-week-adjustment). _This signal is no longer updated as of 1 October, 2020._ <br/> **First Available:** 2020-02-01 |
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|`smoothed_covid19_from_claims`| Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on claims data from health system partners, smoothed in time using a Gaussian linear smoother <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_adj_covid19_from_claims`| Same as `smoothed_covid19_from_claims`, but with systematic day-of-week effects removed using [the same mechanism as in `doctor-visits`](doctor-visits.md#day-of-week-adjustment) <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_covid19`| Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on electronic medical record and claims data from health system partners, smoothed in time using a Gaussian linear smoother. _This signal is no longer updated as of 1 October, 2020._ <br/> **Earliest date available:** 2020-02-01 |
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|`smoothed_adj_covid19`| Same as `smoothed_covid19`, but with systematic day-of-week effects removed using [the same mechanism as in `doctor-visits`](doctor-visits.md#day-of-week-adjustment). _This signal is no longer updated as of 1 October, 2020._ <br/> **Earliest date available:** 2020-02-01 |
Copy file name to clipboardExpand all lines: docs/api/covidcast-signals/indicator-combination.md
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## Statistical Combination Signals
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***First issued by Delphi:** May 20, 2020
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***Earliest issue available:** May 20, 2020
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***Number of data revisions since May 19, 2020:** 1
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***Date of last change:**[June 3, 2020](../covidcast_changelog.md#indicator-combination)
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***Available for:** county, msa, state (see [geography coding docs](../covidcast_geography.md))
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## Compositional Signals: Confirmed Cases and Deaths
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***First issued by Delphi:** 7 July 2020
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***Earliest issue available:** 7 July 2020
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***Number of data revisions since 19 May 2020:** 1
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***Date of last change:**[12 October 2020](../covidcast_changelog.md#indicator-combination)
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***Available for:** county, msa, hrr, state (see [geography coding docs](../covidcast_geography.md))
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| Signal | 7-day average signal | Description |
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|`confirmed_cumulative_num`|`confirmed_7dav_cumulative_num`| Cumulative number of confirmed COVID-19 cases <br/> **First Available:** 2020-02-20 |
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|`confirmed_cumulative_prop`|`confirmed_7dav_cumulative_prop`| Cumulative number of confirmed COVID-19 cases per 100,000 population <br/> **First Available:** 2020-02-20 |
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|`confirmed_incidence_num`|`confirmed_7dav_incidence_num`| Number of new confirmed COVID-19 cases, daily <br/> **First Available:** 2020-02-20 |
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|`confirmed_incidence_prop`|`confirmed_7dav_incidence_prop`| Number of new confirmed COVID-19 cases per 100,000 population, daily <br/> **First Available:** 2020-02-20 |
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|`deaths_cumulative_num`|`deaths_7dav_cumulative_num`| Cumulative number of confirmed deaths due to COVID-19 <br/> **First Available:** 2020-02-20 |
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|`deaths_cumulative_prop`|`deaths_7dav_cumulative_prop`| Cumulative number of confirmed due to COVID-19, per 100,000 population <br/> **First Available:** 2020-02-20 |
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|`deaths_incidence_num`|`deaths_7dav_incidence_num`| Number of new confirmed deaths due to COVID-19, daily <br/> **First Available:** 2020-02-20 |
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|`deaths_incidence_prop`|`deaths_7dav_incidence_prop`| Number of new confirmed deaths due to COVID-19 per 100,000 population, daily <br/> **First Available:** 2020-02-20 |
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|`confirmed_cumulative_num`|`confirmed_7dav_cumulative_num`| Cumulative number of confirmed COVID-19 cases <br/> **Earliest date available:** 2020-02-20 |
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|`confirmed_cumulative_prop`|`confirmed_7dav_cumulative_prop`| Cumulative number of confirmed COVID-19 cases per 100,000 population <br/> **Earliest date available:** 2020-02-20 |
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|`confirmed_incidence_num`|`confirmed_7dav_incidence_num`| Number of new confirmed COVID-19 cases, daily <br/> **Earliest date available:** 2020-02-20 |
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|`confirmed_incidence_prop`|`confirmed_7dav_incidence_prop`| Number of new confirmed COVID-19 cases per 100,000 population, daily <br/> **Earliest date available:** 2020-02-20 |
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|`deaths_cumulative_num`|`deaths_7dav_cumulative_num`| Cumulative number of confirmed deaths due to COVID-19 <br/> **Earliest date available:** 2020-02-20 |
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|`deaths_cumulative_prop`|`deaths_7dav_cumulative_prop`| Cumulative number of confirmed due to COVID-19, per 100,000 population <br/> **Earliest date available:** 2020-02-20 |
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|`deaths_incidence_num`|`deaths_7dav_incidence_num`| Number of new confirmed deaths due to COVID-19, daily <br/> **Earliest date available:** 2020-02-20 |
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|`deaths_incidence_prop`|`deaths_7dav_incidence_prop`| Number of new confirmed deaths due to COVID-19 per 100,000 population, daily <br/> **Earliest date available:** 2020-02-20 |
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