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Volume 21, Number 2—February 2015

Refining Historical Limits Method to Improve Disease Cluster Detection, New York City, New York, USA

Alison Levin-Rector1Comments to Author , Elisha L. Wilson2, Annie D. Fine, and Sharon K. Greene
Author affiliations: New York City Department of Health and Mental Hygiene, Queens, New York, USA

Main Article

Table 2

Diseases included in analyses using HLMrefined and details of customizations, New York City, New York, USA, May 20–August 5, 2013*

Disease Minimum no. cases in UHF neighborhood to qualify for signal Further customization
Amebiasis 5
Anaplasmosis (human granulocytic) 3
Babesiosis 3
Campylobacteriosis 8
Cholera 3
Cryptosporidiosis 5
Cyclosporiasis 3
Dengue 3
Ehrlichiosis (human monocytic) 3
Giardiasis 5
Haemophilus influenzae disease, invasive 3
Hemolytic uremic syndrome 3
Hepatitis A 5
Hepatitis B (acute) 2†
Hepatitis D 2†
Hepatitis E 2†
Legionellosis 5
Listeriosis 3
Malaria 3
Meningitis, bacterial 4
Meningitis, viral (aseptic) 3
Meningococcal disease (Neisseria meningitidis) 3
Paratyphoid fever 3
Rickettisalpox 3
Rocky Mountain spotted fever 3 Restrict analysis to confirmed, probable, and suspected cases and implement a 4-wk lag to allow for data accrual
Shiga toxin–producing Escherichia coli (including E. coli O157:H7) infection 3
Shigellosis 10
Staphylococcus aureus infection, vancomycin intermediate 3
Streptococcus (group A) disease, invasive 5 Restrict analysis to confirmed, probable, suspected, and pending cases
Streptococcus (group B) disease, invasive 5
Streptococcus pneumoniae disease, invasive 5
Typhoid fever 3
Vibrio spp. infection, noncholera (including parahaemolyticus and vulnificus) 3
West Nile disease 3
Yersiniosis 3

* HLMrefined, refined method applied starting May 20, 2013; UHF, United Hospital Fund.
†These are the only diseases for which the signaling threshold was decreased below 3 cases.

Main Article

1Current affiliation: RTI International, Research Triangle Park, North Carolina, USA.

2Current affiliation: Colorado Department of Public Health and Environment, Denver, Colorado, USA.

Page created: January 20, 2015
Page updated: January 20, 2015
Page reviewed: January 20, 2015
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