ArticleBMC infectious diseases2014
Bordetella pertussis in sporadic and outbreak settings in Alberta, Canada, July 2004-December 2012.
Article in BMC infectious diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
11 citing papers in PubMed, 17 citations in OpenAlex.
- Seroepidemiological Assessment ofHealth care science · 2025Article
- Alarm Thresholds for Pertussis Outbreaks in Iran: National Data Analysis.Osong public health and research perspectives · 2020Article
- Emerging of ptxP3 lineage in Bordetella pertussis strains circulating in a population in northeastern Mexico.Epidemiology and infection · 2018Article
- How well do ICD-9 physician claim diagnostic codes identify confirmed pertussis cases in Alberta, Canada? A Canadian Immunization Research Network (CIRN) Study.BMC health services research · 2017Article
- Determinants of non-vaccination and incomplete vaccination in Canadian toddlers.Human vaccines & immunotherapeutics · 2017Article
- Epidemiology of pertussis in Alberta, Canada 2004-2015.BMC public health · 2017Article
- Article
- Old Disease and New Challenges: Major Obstacles of Current Strategies in the Prevention of Pertussis.Iranian journal of pediatrics · 2016Review
- Pertussis: Microbiology, Disease, Treatment, and Prevention.Clinical microbiology reviews · 2016Review
- Characteristics of pertussis outbreaks in Catalonia, Spain, 1997 to 2010.Human vaccines & immunotherapeutics · 2015Article
- Article
Corrections and comments
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Authors and funding
9 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundProvLab Alberta provides all laboratory testing for Bordetella pertussis including sporadic cases and outbreak investigations through collaborations with provincial public health partners. We describe B. pertussis activity in Alberta from July 2004 to December 2012.
methodsLaboratory testing for pertussis was analyzed using interpreted laboratory data that was generated by DIAL, a secure web-based platform. Duplicate specimens from the same individual ≤90 days were excluded to generate a case-based dataset. Immunization status of confirmed pertussis cases from the provincial immunization repository was reviewed.
resultsOverall, 7.1% of suspected pertussis cases tested positive with a higher positivity rate in outbreak as compared to sporadic setting. Annual variations in sporadic pertussis cases were observed across the province with higher positivity rates in 2005, 2008, 2009 and 2012. A significantly higher positivity rate was observed in a northern region of Alberta. While the positivity rate in sporadic setting was highest in adolescents aged 10 to <15 years old (14.8%), population-based disease burden was highest in young children <5 years old. Of the 81.6% (n = 1,348) pertussis cases with immunization records, 48.3% were up-to-date with immunization. The pertussis cases that were up-to-date with their immunization were older (median age 12.9 years) as compared to those with incomplete (median age 9.7 years) or no pertussis immunization (median age 3.8 years).
conclusionsCyclic pattern of annual pertussis activity with geographic variation was observed in Alberta with no obvious case finding effect from outbreak investigations. The high positivity rates in adolescents suggested an underestimation of disease burden in this age group.
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