ArticleCanada communicable disease report = Releve des maladies transmissibles au Canada2022
Identification of an unusual cluster of human granulocytic anaplasmosis in the Estrie region, Québec, Canada in 2021.
Article in Canada communicable disease report = Releve des maladies transmissibles au Canada, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed, 4 citations in OpenAlex.
- Fifty years of the Canadian Field Epidemiology Program (1975-2025): Reflecting on the past, shaping the future.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2026Article
- Surveillance forCanada communicable disease report = Releve des maladies transmissibles au Canada · 2026Article
- Anaplasmosis: Emerging threat in Canada.Canadian family physician Medecin de famille canadien · 2025Review
- Case Series of Jamestown Canyon Virus Infections with Neurologic Outcomes, Canada, 2011-2016.Emerging infectious diseases · 2024Article
- Article
- Surveillance forCanada communicable disease report = Releve des maladies transmissibles au Canada · 2023Article
- The added value of One Health surveillance: data from questing ticks can provide an early signal for anaplasmosis outbreaks in animals and humans.Canadian journal of public health = Revue canadienne de sante publique · 2023Article
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Human granulocytic anaplasmosis (HGA) is a potentially severe tick-borne infection caused by the bacterium Methods: Confirmed cases of HGA were defined as individuals with typical clinical manifestations and a positive polymerase chain reaction assay. The cases were interviewed using a structured questionnaire and clinical data was obtained from medical records. Results: A total of 25 confirmed cases were identified during the 2021 transmission season, thus constituting the largest known cluster of HGA in Canada. The most common symptoms reported were fever, fatigue and headaches. Laboratory investigations found that 20 (80%) of the patients had thrombocytopenia and 18 (72%) had leukopenia at presentation. Almost half of the patients required hospitalization (n=11, 44%), with a median duration of four days (interquartile range [IQR] 2.5-5 days), including one patient who required intensive care. No deaths were recorded during the study. Epidemiological investigation found that all cases were domestically acquired, and yard maintenance was the most prevalent at-risk activity identified. Only seven (28%) cases had been aware of a tick bite in the previous two weeks. Conclusion: Detection of this unusual cluster of HGA cases provides further evidence that
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.