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AZ BioSense Community of Practice

The mission of the Arizona BioSense Workgroup is to work collaboratively as partners to build capacity and quality of BioSense syndromic surveillance in Arizona. Our vision is to improve population health and emergency response through the use of timely and effective syndromic surveillance. This space is a platform for our members to continue discussions and share cross-role topics and questions from providing the data to using syndromic data (clinician/IT/public health).
Laura ErhartJoli WeissTaylor Lutich, AZHayleigh McCall, Program Analyst III, Syndromic Surveillance at CSTEMatt RoachIrene, Senior Surveillance EpidemiologistAmanda Swanson, TB Special Projects Epidemiologist at AZDHSKaitlyn ChorbiAlyaa Altabbaa, Program Analyst at CSTEHeather VenkatLaura Fox, Environmental Public Health Tracking EpidemiologistChristina Mrukowicz, EpidemiologistSarah GieszlAmy LaiMichelle Kreutzberg-Martinez +189 others
Updates to ESSENCE by Krystal Collier ·

📢 NSSP Data Corrections affect Two Syndromes

Below there is an update that came out from NSSP about corrections to Two Syndromes.  There will be an additional update on this during the NSSP CoP monthly call today at 12-1:30pm AZ time. Contact syndromicsurveillance@adhs.gov for any questions.


Subject: Correction Affects Two Syndrome

Dear NSSP Site Administrators,

An error was found in the Chief Complaint Discharge Diagnosis (CCDD) categories for influenza-like illness (“ILI Syndrome Neg Coronavirus DD v1”) and e-cigarette or vaping-associated lung injury (“CDC EVALI v1-Manually limit to ages 11–34”).

Both categories use the logic “ISNULL,or,^,ANDNOT,” with CCDD category free-text values to negate other CCDD categories. Due to the processing logic, a visit could be labeled with either the ILI or EVALI categories before receiving another category label that should result in negation. The simplest example is a visit being categorized for “ILI Syndrome Neg Coronavirus DD v1” and “CDC Coronavirus DD v1.” The first syndrome is binned before the CDC Coronavirus DD v1 label can be applied, resulting in contradictory CCDD category labels. 

Developers with the Johns Hopkins University Applied Physics Laboratory will implement a fix for these two CCDD categories beginning October 27, 2021. Several days will be needed to process the historic data corrections. The corrections will impact all queries that use these categories. (Note: The fix will correct the version 1 categories; version 2 categories will not be created.) 

No action is required by users. However, be aware that visit counts for both categories could either decrease or remain unchanged. Our estimation for 90 days of NSSP data indicate that ILI Syndrome Neg Coronavirus DD v1 will decrease by an average of 1,023 visits per day and that CDC EVALI v1-Manually limit to ages 11–34 will decrease, on average, by fewer than 7 visits per week. For ILI Syndrome Neg Coronavirus DD v1, the error with Coronavirus negations causes visits to roughly follow current trends in COVID-19 diagnosis codes. 

Users can run the following queries in the “CC and DD Category Free Text” field to quantify these changes for their health jurisdictions. The returned visits will be those no longer receiving the labels of “ILI Syndrome Neg Coronavirus DD v1” or “CDC EVALI v1-Manually limit to ages 11–34.” 

^;ILI Syndrome Neg Coronavirus DD v1;^,AND,^;CDC Coronavirus-DD v1;^ 

^EVALI^,AND,(,^Heroin^,or,^Opioid^,or,^Stimulant^,or,^Asthma^,or,^All traffic^,or,^legionell^,or,^Pertuss^,or,^Heat Related^,or,^Suicide^,or,^Dialys^,or,^Firearm^,or,^Diabetic^,) 

Many thanks to our partners in Florida for discovering this error and bringing it to our attention. If you have concerns or questions, please contact nssp@cdc.gov.