May 24, 2020

Variables affected:

Tags: State Anomalies

On May 25, 2020 Puerto RIco's Confirmed cases decreased by about 600, which caused Total Cases and Total Tests (specimens) to decrease by the same amount. We were unable to find an explanation for this.

May 21, 2020

Variables affected:

Tags: State Anomalies

On May 21, 2020 Puerto Rico's Confirmed deaths decreased by seven. We were unable to find an explanation for this.

June 11, 2020

Variables affected:

Tags: State Anomalies

On June 11, 2020 Puerto Rico's Confirmed deaths decreased by seven. We were unable to find an explanation for this.

May 16, 2020

Variables affected:

Tags: CTP Backfill

On May 16, 2020, our data entry team entered the wrong value for confirmed deaths. It should have been 63 rather than 59.

May 6, 2020 to May 20, 2020

Variables affected:

Tags: CTP Backfill

We stopped carrying over the Negative value for Puerto Rico between May 6, 2020 and May 20, 2020, however Puerto Rico's Total tests are calculated from Positive plus Negative so we need to carry the value over. Carrying over the Negative value from May 5, 2020.

March 7, 2021

Variables affected:

Tags: CTP Backfill CTP Backfill Missed Update

On March 7, 2021, Puerto Rico relocated their data to another link. To allow our data quality team time to investigate this source, we did not update their data on March 7, 2021. We're backfilling their data for March 7, 2021, from screenshots of their new dashboard and their COVID-19 report from the day.

March 7, 2021

Variables affected:

Tags: State / Metric No Update

On March 7, 2021, Puerto Rico's dashboard link was broken and required a login. As a result, data will be frozen until a suitable replacement is found.

March 1, 2021

Variables affected:

Tags: State Anomalies

On March 1, 2021, Puerto Rico's Recovered decreased by 5 without explanation.

February 22, 2021

Variables affected:

Tags: State Anomalies

On February 22, 2021, Puerto Rico's **Recovered** decreased by 27 without explanation. Additionally, Rhode Island's **Hospital discharges** and **Recovered** metrics each decreased by 57 without explanation.

February 11, 2021

Variables affected:

Tags: State Anomalies

On February 11, 2021, Puerto Rico's reported number of **Recovered** cases decreased by 12 without explanation.

October 1, 2020 to February 10, 2021

Variables affected:

Tags: CTP Backfill CTP Backfill Mistake Correction

On October 1, 2020, we received a press release from Dept. de Salud with updated Total PCR tests (specimens), Negative PCR tests (specimens), and Positive PCR tests (specimens) for Puerto Rico dating back to August 28, 2020. We backfilled these values from August 28, 2020 through September 30, 2020, however due to an error in the backfill process, we did not begin capturing these new values on subsequent dates. On February 11, 2021, we corrected this error and backfilled our timeseries of Total PCR tests (specimens), Negative PCR tests (specimens), and Positive PCR tests (specimens) for October 1, 2020 through February 10, 2020 with the values from the August 28, 2020 press release.

December 20, 2020

Variables affected:

Tags: State Anomalies

On December 20, 2020, Puerto Rico's **Recovered** value decreased by about 500 with no explanation. We have previously noted that this occurs sometimes for this metric, probably because of deduplication or data clearning.

November 29, 2020

Variables affected:

Tags: State / Metric No Update

On November 29, 2020, the listed states had a partial or missed update.

November 21, 2020

Variables affected:

Tags: State Anomalies

On November 21, 2020, Puerto Rico's **Recovered** number decreased by 1.

November 16, 2020

Variables affected:

Tags: State Anomalies

On November 16, 2020, Puerto Rico's Recovered number decreased by 11 cases.

November 14, 2020

Variables affected:

Tags: State Anomalies

On November 14, 2020, Puerto Rico reported a 210 decrease in their Recovered metric. Puerto Rico’s Recovered numbers occasionally decreases without explanation. We suspect this is due to some sort of data quality assurance or de-deduplication.

November 5, 2020 to November 6, 2020

Variables affected:

Tags: CTP Backfill

A footnote in the Puerto Rico daily report allowed us to extend our probable case column back two days (11/5 and 11/6). No change to current totals.

April 24, 2020 to November 6, 2020

Variables affected:

Tags: State Annotation / Source Change CTP Backfill CTP API / Logic Changes

PR is changing probable case reporting to reflect antigen instead of antibody reporting, moving to report antibody in a suspected category. Probable cases have dropped to 77. To avoid the appearance of a ~33,000 case drop today nationally and to reflect most up to date CSTE August definition, we are removing cases identified via antibody from PR's historical Positive field.

Note: There is a perceived drop on April 24, 2020, as the timeseries transitions from date of report, to this backfill.

April 24, 2020 to November 6, 2020

Variables affected:

Tags: State Annotation / Source Change CTP Backfill CTP API / Logic Changes

As reported in #936, PR is changing probable case reporting to reflect antigen instead of antibody reporting, moving to report antibody in a suspected category. Probable cases have dropped to 77.

To avoid the appearance of a ~33,000 case drop today nationally and to reflect most up to date CSTE August definition, we are clearing PR's probable case history.

November 2, 2020

Variables affected:

Tags: State Anomalies

On November 2, 2020, Puerto Rico's Recovered number decreased by about 550 cases.

April 22, 2020 to October 20, 2020

Variables affected:

PR - Because of a new connection to electronically link one of the systems which manages the information used by the clinical labs to the BioPortal, PR's 10/23 report includes a breakdown of updated information for our positiveCasesViral and positiveTestsAntibody metrics.

10/23:

30,956 positiveCasesViral. This number includes 43 added cases with Test-Taking Dates 7/25 - 10/9 and 5 duplicate cases subtracted.

30,028 positiveTestsAntibody. This number includes 878 additional probable cases with understood Test-Taking Dates from 10/10 - 10/20. It also accounts for 105 probable cases which were subtracted after having a positive PCR test result. Also included in this number are 28 additional cases with Test-Taking Dates from 4/22 - 10/9 and 6 subtracted duplicate cases.

October 23, 2020

Variables affected:

Tags: State Anomalies

On 10/23, PR released a backlog of cases, resulting in ~2000 case increase.

August 28, 2020 to September 30, 2020

Variables affected:

Tags: CTP Backfill New Dataset / Timeseries

Received press release from Dept. de Salud with values updated to 8/28/20. Backfill from 8/28/20-9/30/20 for Total Tests(PCR), Positive Tests(PCR), and Negative Tests(PCR).

April 23, 2020 to September 13, 2020

Variables affected:

Tags: CTP Backfill New Metric

1. Backfill probables from 4/29-now from "Positive Antibody Tests" 2. Update confirmed on 5/18 to 1195 from 2710 3. Backfill probable cases & positive antibody tests from 4/24-4/28 from total-confirmed

August 12, 2020 to August 13, 2020

Variables affected:

Tags: CTP Backfill Mistake Correction

States Grades not published for 8/12-8/13

July 11, 2020 to July 24, 2020

Variables affected:

Tags: CTP Backfill

We got another of PR's sporadic PCR testing updates, letting us know about a large number of new tests (~50K) as of 7/23 (for reference, our last data point for the PCR columns was 7/9). In applying this update, I discovered the negatives and PCR test columns were wrong starting on 7/11 due to a miscommunication with data entry after the 7/9 backfill, so I also fixed these rows. So the adjusted rows run from 7/11 to 7/24, with a net increase of ~115K tests over the previous baseline.

April 22, 2020

Variables affected:

Tags: State Anomalies

On April 22, 2020, Puerto Rico announced that they were adjusting down the number of cases because they found that there were duplicated cases. The number of cases went down by about 300