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Volume 21, Number 2—February 2015
Research

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
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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