Skip to main content

Table 1 Case definitions and algorithm logic for syndromes of interest in Yukon’s ED-SyS

From: Development and validation of an automated emergency department-based syndromic surveillance system to enhance public health surveillance in Yukon: a lower-resourced and remote setting

Syndrome

Definition

Logic/Algorithm

Disease/condition of Interest

Gastrointestinal (GI)

Match with the following diagnosis of interest OR

Diarrhea Concept OR Vomiting/Nausea Concept OR Nausea Only Concept Anorexia Concept OR GI Concept

GI related EXCLUSIONS TERMS

1. Flag DD logic first if not blank or left without being seen related text

2. If logic step #1 not met and CN/CC logic =1 then flag

3. If DD = “Viral” and DD =0 and CN/CC logic = 1 then flag

4. If DD logic met and CN/CC logic met then then flag

Verotoxigenic E. coli (e.g. O157:H7) enteric disease; Campylobacteriosis; Cryptosporidiosis; Salmonellosis; Shigellosis; Yersiniosis; Gastroenteritis (acute diarrheal)/ Enteric outbreaks all causes

Influenza-Like Illness (ILI)

Match with the following diagnosis of interest OR ILI OR

Fever Concept AND Cough Concept AND (sore throat Concept OR at least one constitutional sign/symptom: Anorexia Concept OR Dizziness Concept OR Malaise Concept OR Muscle Pain Concept OR Lymph Concept)

1. If DD logic or CN/CC logic met then flag

Influenza

Respiratory (Resp)

Match with the following diagnosis of interest OR

Respiratory Concept OR Cough Concept OR Sore Concept AND (at least one constitutional sign/symptom: Anorexia Concept OR Dizziness Concept OR Fever Concept OR Malaise Concept OR Muscle Pain Concept OR Lymph Concept)

1. Flag DD logic first if not blank or left without being seen related text

2. If logic step #1 not met and CN/CC =1 then flag

3. If DD logic met and CN/CC logic met then then flag

Pertussis (whooping cough), Influenza, RSV

Rash

Match with the following diagnosis of interest OR

Rash Concept AND at least one constitutional sign/symptom: (Anorexia term OR Dizziness Concept OR Fever Concept OR Malaise Concept OR Muscle Pain Concept OR Lymph Concept)

Rash related EXCLUSION terms

1. If DD logic or CN/CC logic met then flag

Measles, Rubella, Chickenpox, Meningitis, Scarlet Fever

Mumps

Match with the following diagnosis of interest OR parotitis OR orchitis OR

Swelling Concept AND Face Concept

Mumps related EXCLUSIONS

1. Flag DD logic first if not blank or left without being seen related text

2. If logic step #1 not met and CN =1 then flag

3. If DD logic met and CN logic met then then flag

Mumps

Neurological infections (Neuro)

Match with the following diagnosis of interest OR

Fever Concept AND (stiff neck Concept OR Seizures Concept OR Blurred Vision Concept OR Photophobia Concept OR Altered Mental Status Concept OR Headache Concept OR Paralysis Concept)

1. Flag DD logic first if not blank or left without being seen related text

2. If logic step #1 not met and CN/CC logic =1 then flag

3. If DD = “Viral”|"Febrile seizure”|"Headache nyd”|"Malaise nyd”|"Sepsis” and DD logic =0 and CN/CC logic = 1 then flag

4. If DD logic met and CN/CC logic met then then flag

Invasive meningococcal disease (Neisseria meningitis) infection; Encephalitis/ meningitis (bacterial; parasitic; viral)

Coronavirus Disease 2019 (COVID-19)

ED visits prior to April 16 *takes into consideration negating terms

Match with the diagnosis of interest in DD OR

CC (SOB, Cough, Fever) on or after Jan 1, 2020 AND

Match with any of the following:

-countries listed from WHO Sitrep to have “local transmission”-indicates locations where the source of infection is within the reporting location Jan 1, 2020 to March 19, 2020

-Mention of international or travel in CN on or after March 15, 2020

OR

-Match with the diagnosis of interest (COVID) in CN

ED visits on or after April 16 *takes into consideration negating terms

-Match with the diagnosis of interest in DD OR

-Match with the diagnosis of interest in CN OR

-Match with any of the following:

-CC on or after Jan 1, 2020- SOB, Cough, Fever

-CC on or after April 16, 2020- Chestpnonc, Stridor, Wheezing, Sore Throat, Syncope, Genweak, Headache, URTI, Nasal congestion/hayfever, Altered LOC, Confusion, Sensory loss/parathesis, Rep Arrest, Cyanosis

-CN- “Loss of taste” or “Loss of smell”

AND

Match with any of the following:

-countries listed from WHO Sitrep to have local transmission-indicates locations where the source of infection is within the reporting location Jan 1, 2020 to March 19, 2020

-Mention of international or travel in CN on or after March 15, 2020

COVID-19