August 1, 2021 Through December 31,2022

Cases occurring between August 1, 2021 and December 31, 2022 were classified by previous CSTE position statement 21-ID-01.

A confirmed case was defined as a person who tested positive by molecular detection (e.g., PCR, NAA) or identification of SARS-CoV-2 through genetic sequencing. A probable case was defined as a person with: a) presumptive lab evidence (antigen) or b) no lab testing but meeting clinical case criteria and is epidemiologically associated with a COVID-19 case. A person will be counted as a new surveillance case (e.g. reinfection) if they test positive for SARS-CoV-2 by a diagnostic test (i.e., molecular, antigen) and it has been greater than 90 days since the previous positive diagnostic test. A death certificate that lists COVID-19 disease or SARS-CoV-2 as a cause of death or a significant condition contributing to death will be classified as a probable case. In addition, a person with sequencing results identifying different SARS-CoV-2 lineages regardless of the time since the previous specimen sequenced will be counted as a new surveillance case. 

September 1, 2020 Through July 29, 2021

Cases occurring between September 1, 2020 and July 29, 2021 were classified by previous CSTE position statement Interim-20-ID-02.

A confirmed case was defined as a person who tested positive by molecular detection (e.g., PCR, NAA). A probable case was defined as a person with: a) presumptive lab evidence (antigen) or b) no lab testing but meeting clinical case criteria and is epidemiologically associated with a COVID-19 case. In addition, a death certificate that lists COVID-19 disease or SARS-CoV-2 as a cause of death or a significant condition contributing to death will be classified as a probable case.

February 1, 2020 Through August 1, 2020  

Cases occurring between February 1, 2020 and August 1, 2020 were classified by previous CSTE position statement Interim-20-ID-01.

A confirmed case was defined as a person who tested positive by molecular detection (e.g., PCR, NAA). A probable case was defined as a person with: 1) presumptive lab evidence (antigen) and b) meeting either clinical criteria or epidemiologic evidence. In addition, a death certificate that lists COVID-19 disease or SARS-CoV-2 as a cause of death or a significant condition contributing to death will be classified as a probable case.