New Method for Real Time Influenza Surveillance in Primary Care: A Wisconsin Research and Education Network (WREN) Supported Study

Temte, Jonathan L.; Barlow, Shari; Schemmel, Amber; Temte, Emily; Hahn, David L.; Shult, Peter; Tamerius, John D.

doi:10.3122/jabfm.2017.05.170031

Cited by 8 publications

(11 citation statements)

References 18 publications

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“…Administrative database analysis for influenza vaccine effectiveness has some clear advantages that lie primarily in the potential sample sizes [4] , [10] , [11] , [12] and relative cost per patient. Administrative databases can include large single health system data [2] or can combine data across large geographic areas [1] , thus may more accurately estimate VE for a country or region. These large datasets would be expected to be sufficiently powered to produce narrow confidence intervals and thus instill confidence in their VE estimates.…”

Section: Discussionmentioning

confidence: 99%

“…Given that the need to determine influenza vaccine effectiveness continues, other methods of determining influenza vaccine effectiveness should be explored. Previous studies have used administrative databases to estimate influenza outpatient visits [1] , track influenza outbreaks [2] and calculate influenza VE in specific population subgroups such as pregnant women [3] and older adults [4] .…”

Section: Introductionmentioning

confidence: 99%

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Comparison of local influenza vaccine effectiveness using two methods

Balasubramani

Zimmerman

Eng

et al. 2021

Vaccine

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of local influenza vaccine effectiveness using two methods

Balasubramani

Zimmerman

Eng

et al. 2021

Vaccine

View full text Add to dashboard Cite

“…Administrative database analysis for influenza vaccine effectiveness has some clear advantages that lie primarily in the potential sample sizes 4,10,11,12 and relative cost per patient. Administrative databases can include large single health system data 2 or can combine data across large geographic areas, 1 thus may more accurately estimate VE for a country or region. These large datasets would be expected to be sufficiently powered to produce have narrow confidence intervals and thus instill confidence in their VE estimates.…”

Section: Discussionmentioning

confidence: 99%

“…Given that the need to determine influenza vaccine effectiveness continues, other methods of determining influenza vaccine effectiveness should be explored. Previous studies have used administrative databases to estimate influenza outpatient visits, 1 track influenza outbreaks 2 and calculate influenza VE in specific population subgroups such as pregnant women 3 and older adults. 4…”

Section: Introductionmentioning

confidence: 99%

Comparison of Local Influenza Vaccine Effectiveness Using Two Methods

Balasubramani

Zimmerman

Eng

et al. 2020

Preprint

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Background: In some settings, research methods to determine influenza vaccine effectiveness (VE) may not be appropriate because of cost, time constraints, or other factors. Administrative database analysis of viral testing results and vaccination history may be a viable alternative. This study compared VE estimates from outpatient research and administrative databases. Methods: Using the test-negative, case-control design, data for 2017-2018 and 2018-2019 influenza seasons, were collected using: 1) research methods including consent, specimen collection, RT-PCR testing and vaccine verification using multiple methods; and 2) an administrative database of outpatients with a clinical respiratory viral panel combined with electronic immunization records. Odds ratios for likelihood of influenza infection by vaccination status were calculated using multivariable logistic regression. VE = (1 - OR) X 100. Results: Research participants were significantly younger (P<0.001), more often white (69% vs. 59%; P<0.001) than non-white and less frequently enrolled through the emergency department (ED) (35% vs. 72%; P<0.001) than administrative database participants. VE was significant against all influenza and influenza A in each season and both seasons combined (37%-49%). Point estimate differences between methods were evident, with higher VE in the research database, but insignificant due to low sample sizes. When enrollment sites were separately analyzed, there were significant differences in VE estimates for all influenza (66% research vs. 46% administrative P<0.001) and influenza A (67% research vs. 49% administrative; P<0.001) in the ED. The selection of the appropriate method for determining influenza vaccine effectiveness depends on many factors, including sample size, subgroups of interest, etc., suggesting that research estimates may be more generalizable. Other advantages of research databases for VE estimates include lack of clinician-related selection bias for testing and less misclassification of vaccination status. The advantages of the administrative databases are potentially shorter time to VE results and lower cost.

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“…We were able to continue our infl uenza surveillance efforts using a surveillance system based on automated reporting of infl uenza A and B results from rapid infl uenza diagnostic tests in primary care practices [5].…”

Section: Introductionmentioning

confidence: 99%

Early evidence for effectiveness of statewide school closure for mitigation of influenza

Temte¹,

He²,

Tamerius³

2021

Arch Community Med Public Health

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Background: School closures were mandated in response to COVID-19 as a nonpharmaceutical intervention. Infl uenza A was widespread in Wisconsin at the time of mandate, March 18, 2020, allowing its evaluation for infl uenza interruption.Methods: Daily percent positivity of infl uenza A among primary care patients who received a rapid infl uenza diagnostic test was evaluated throughout two infl uenza seasons while schools were open and closed.Results: Median deviation from baseline of percent positivity was signifi cantly lower when schools were closed than when open (-2.25% vs 1.08%; H=7.84; P=0.005). Median deviation in percent positivity for the eight days following statewide school closure was -20.0.Discussion: Unprecedented closures of all Wisconsin schools was associated with a rapid decline in infl uenza A. Additional evaluations within other jurisdictions are warranted.

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New Method for Real Time Influenza Surveillance in Primary Care: A Wisconsin Research and Education Network (WREN) Supported Study

Cited by 8 publications

References 18 publications

Comparison of local influenza vaccine effectiveness using two methods

Comparison of local influenza vaccine effectiveness using two methods

Comparison of Local Influenza Vaccine Effectiveness Using Two Methods

Early evidence for effectiveness of statewide school closure for mitigation of influenza

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