tetano
Editor, Senior Moderator
Influenza Other Respi Viruses. 2012 Sep 18. doi: 10.1111/irv.12014. [Epub ahead of print]
Estimating influenza incidence and rates of influenza-like illness in the outpatient setting.
Fowlkes A, Dasgupta S, Chao E, Lemmings J, Goodin K, Harris M, Martin K, Feist M, Wu W, Boulton R, Temte J, Brammer L, Finelli L.
Source
Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA Council of State and Territorial Epidemiologists, Atlanta, GA, USA Bureau of Epidemiology, Florida Department of Health, Tallahassee, FL, USA Center for Acute Disease Epidemiology, Iowa Department of Public Health, Des Moines, IA, USA Infectious Disease Epidemiology Prevention and Control, Minnesota Department of Health, St. Paul, MN, USA Division of Disease Control, North Dakota Department of Health, Bismarck, ND, USA Primary Care Information Project, New York City Department of Health and Mental Hygiene, New York, NY, USA Division of Disease Control and Prevention, Utah Department of Health, Salt Lake City, UT, USA Department of Family Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
Abstract
Please cite this paper as: Fowlkes et al. (2012) Estimating influenza incidence and rates of influenza-like illness in the outpatient setting. Influenza and Other Respiratory Viruses DOI: 10.1111/irv.12014. Background: Estimating influenza incidence in outpatient settings is challenging. We used outpatient healthcare practice populations as a proxy to estimate community incidence of influenza-like illness (ILI) and laboratory-confirmed influenza-associated ILI. Methods: From October 2009 to July 2010, 38 outpatient practices in seven jurisdictions conducted surveillance for ILI (fever with cough or sore throat for patients ≥2 years; fever with ≥1 respiratory symptom for patients <2 years). From a sample of patients with ILI, respiratory specimens were tested for influenza. Results: During the week of peak influenza activity (October 24, 2009), 13% of outpatient visits were for ILI and influenza was detected in 72% of specimens. For the 10-month surveillance period, ILI and influenza-associated ILI incidence were 20?0 (95% CI: 19?7, 20?4) and 8?7/1000 (95% CI: 8?2, 9?2) persons, respectively. Influenza-associated ILI incidence was highest among children aged 2-17 years. Observed trends were highly correlated with national ILI and virologic surveillance. Conclusions: This is the first multistate surveillance system demonstrating the feasibility of using outpatient practices to estimate the incidence of medically attended influenza at the community level. Surveillance demonstrated the substantial burden of pandemic influenza in outpatient settings and especially in children aged 2-17 years. Observed trends were consistent with established syndromic and virologic systems.
? 2012 Blackwell Publishing Ltd.
PMID:
22984820
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22984820
Estimating influenza incidence and rates of influenza-like illness in the outpatient setting.
Fowlkes A, Dasgupta S, Chao E, Lemmings J, Goodin K, Harris M, Martin K, Feist M, Wu W, Boulton R, Temte J, Brammer L, Finelli L.
Source
Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA Council of State and Territorial Epidemiologists, Atlanta, GA, USA Bureau of Epidemiology, Florida Department of Health, Tallahassee, FL, USA Center for Acute Disease Epidemiology, Iowa Department of Public Health, Des Moines, IA, USA Infectious Disease Epidemiology Prevention and Control, Minnesota Department of Health, St. Paul, MN, USA Division of Disease Control, North Dakota Department of Health, Bismarck, ND, USA Primary Care Information Project, New York City Department of Health and Mental Hygiene, New York, NY, USA Division of Disease Control and Prevention, Utah Department of Health, Salt Lake City, UT, USA Department of Family Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
Abstract
Please cite this paper as: Fowlkes et al. (2012) Estimating influenza incidence and rates of influenza-like illness in the outpatient setting. Influenza and Other Respiratory Viruses DOI: 10.1111/irv.12014. Background: Estimating influenza incidence in outpatient settings is challenging. We used outpatient healthcare practice populations as a proxy to estimate community incidence of influenza-like illness (ILI) and laboratory-confirmed influenza-associated ILI. Methods: From October 2009 to July 2010, 38 outpatient practices in seven jurisdictions conducted surveillance for ILI (fever with cough or sore throat for patients ≥2 years; fever with ≥1 respiratory symptom for patients <2 years). From a sample of patients with ILI, respiratory specimens were tested for influenza. Results: During the week of peak influenza activity (October 24, 2009), 13% of outpatient visits were for ILI and influenza was detected in 72% of specimens. For the 10-month surveillance period, ILI and influenza-associated ILI incidence were 20?0 (95% CI: 19?7, 20?4) and 8?7/1000 (95% CI: 8?2, 9?2) persons, respectively. Influenza-associated ILI incidence was highest among children aged 2-17 years. Observed trends were highly correlated with national ILI and virologic surveillance. Conclusions: This is the first multistate surveillance system demonstrating the feasibility of using outpatient practices to estimate the incidence of medically attended influenza at the community level. Surveillance demonstrated the substantial burden of pandemic influenza in outpatient settings and especially in children aged 2-17 years. Observed trends were consistent with established syndromic and virologic systems.
? 2012 Blackwell Publishing Ltd.
PMID:
22984820
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22984820