Table 1.

Search terms queried in ESSENCE to identify emergency department visits for potential rabies exposures, suburban Cook County, Illinois, January 1, 2013, through February 29, 2016^a

Inclusionary Terms	Exclusionary Terms
Rabies, rabid
Postexposure prophylaxisb
Bat	Ball, batter, metal, plastic, laceration, contusion, combat, assault, bath, intubation, exacerbation
Raccoon, skunk, fox, coyote
ICD-9-CM discharge diagnosis codes21 V01.5: Contact with or exposure to rabies V04.5: Need for prophylactic vaccination and inoculation against rabies 979.1: Poisoning by rabies vaccine E949.1: Rabies vaccine causing adverse effects in therapeutic use
ICD-10-CM discharge diagnosis codes22,c Z20.3: Contact with and (suspected) exposure to rabies Z29.14: Encounter for prophylactic rabies immune globin Z23: Encounter for immunization T50.B91: Poisoning by other viral vaccines

Abbreviations: ESSENCE, Electronic Surveillance System for the Early Notification of Community-Based Epidemics; ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; ICD-10-CM, International Classification of Diseases, Tenth Revision, Clinical Modification.

^aWild card symbols and word segments were used in place of full terms wherever possible (eg, *lac* for “laceration”). Alternative spellings of commonly misspelled words were also included.

^bThe acronym PEP was not included.

^cUsed only for the period after interventions to increase reporting compliance (July 1, 2015, through February 29, 2016).