Helene Mens, Rosa Gynthersen, Jeppe Romme Christensen, Morten Blinkenberg, Finn Sellebjerg, Daniel El Fassi, Bente Glintborg, Dorte Vendelbo Jensen, Jørgen Skov Jensen, Anne-Mette Lebech
{"title":"2023-2024年丹麦接受b细胞消耗治疗的个体中蜱传mikurenihia的患病率:一项前瞻性队列研究","authors":"Helene Mens, Rosa Gynthersen, Jeppe Romme Christensen, Morten Blinkenberg, Finn Sellebjerg, Daniel El Fassi, Bente Glintborg, Dorte Vendelbo Jensen, Jørgen Skov Jensen, Anne-Mette Lebech","doi":"10.1016/j.ijid.2025.108069","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Neoehrlichia mikurensis is an emerging tick-borne pathogen posing a particular risk to individuals undergoing B-cell depleting therapy (BCDT).</p><p><strong>Objective: </strong>To establish a rational testing strategy for N. mikurensis among individuals on BCDT METHODS: We conducted a prospective cohort study between January 2023 and December 2024 on Adults receiving BCDT, in the Capital Region of Denmark. A digital questionnaire covered tick exposure and symptoms. Blood was tested for N. mikurensis DNA by real-time PCR.</p><p><strong>Results: </strong>Of 1,211 eligible individuals, 443 (37%) were enrolled. The median age was 54 years, and 62% were female. PCR testing was performed on 389 participants, detecting N. mikurensis DNA in 1.0% (4/389; 95% CI: 0.4-2.6). All infected individuals reported prolonged symptoms (e.g., fatigue, fever, unintended weight loss) and responded rapidly to doxycycline therapy. Notably, only one of the four cases exhibited elevated CRP. Symptom-based screening yielded a high likelihood ratio of 25 for identifying positive cases.</p><p><strong>Conclusions: </strong>Our results indicate that employing a symptom-based testing strategy for N. mikurensis is a rational approach for individuals undergoing BCDT.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"108069"},"PeriodicalIF":4.3000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Prevalence of Tick-borne Neoehrlichia mikurensis in Individuals Undergoing B-cell Depleting Therapy in Denmark: A Prospective Cohort Study 2023-2024.\",\"authors\":\"Helene Mens, Rosa Gynthersen, Jeppe Romme Christensen, Morten Blinkenberg, Finn Sellebjerg, Daniel El Fassi, Bente Glintborg, Dorte Vendelbo Jensen, Jørgen Skov Jensen, Anne-Mette Lebech\",\"doi\":\"10.1016/j.ijid.2025.108069\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Neoehrlichia mikurensis is an emerging tick-borne pathogen posing a particular risk to individuals undergoing B-cell depleting therapy (BCDT).</p><p><strong>Objective: </strong>To establish a rational testing strategy for N. mikurensis among individuals on BCDT METHODS: We conducted a prospective cohort study between January 2023 and December 2024 on Adults receiving BCDT, in the Capital Region of Denmark. A digital questionnaire covered tick exposure and symptoms. Blood was tested for N. mikurensis DNA by real-time PCR.</p><p><strong>Results: </strong>Of 1,211 eligible individuals, 443 (37%) were enrolled. The median age was 54 years, and 62% were female. PCR testing was performed on 389 participants, detecting N. mikurensis DNA in 1.0% (4/389; 95% CI: 0.4-2.6). All infected individuals reported prolonged symptoms (e.g., fatigue, fever, unintended weight loss) and responded rapidly to doxycycline therapy. Notably, only one of the four cases exhibited elevated CRP. Symptom-based screening yielded a high likelihood ratio of 25 for identifying positive cases.</p><p><strong>Conclusions: </strong>Our results indicate that employing a symptom-based testing strategy for N. mikurensis is a rational approach for individuals undergoing BCDT.</p>\",\"PeriodicalId\":14006,\"journal\":{\"name\":\"International Journal of Infectious Diseases\",\"volume\":\" \",\"pages\":\"108069\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Infectious Diseases\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1016/j.ijid.2025.108069\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"INFECTIOUS DISEASES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Infectious Diseases","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.ijid.2025.108069","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
Prevalence of Tick-borne Neoehrlichia mikurensis in Individuals Undergoing B-cell Depleting Therapy in Denmark: A Prospective Cohort Study 2023-2024.
Background: Neoehrlichia mikurensis is an emerging tick-borne pathogen posing a particular risk to individuals undergoing B-cell depleting therapy (BCDT).
Objective: To establish a rational testing strategy for N. mikurensis among individuals on BCDT METHODS: We conducted a prospective cohort study between January 2023 and December 2024 on Adults receiving BCDT, in the Capital Region of Denmark. A digital questionnaire covered tick exposure and symptoms. Blood was tested for N. mikurensis DNA by real-time PCR.
Results: Of 1,211 eligible individuals, 443 (37%) were enrolled. The median age was 54 years, and 62% were female. PCR testing was performed on 389 participants, detecting N. mikurensis DNA in 1.0% (4/389; 95% CI: 0.4-2.6). All infected individuals reported prolonged symptoms (e.g., fatigue, fever, unintended weight loss) and responded rapidly to doxycycline therapy. Notably, only one of the four cases exhibited elevated CRP. Symptom-based screening yielded a high likelihood ratio of 25 for identifying positive cases.
Conclusions: Our results indicate that employing a symptom-based testing strategy for N. mikurensis is a rational approach for individuals undergoing BCDT.
期刊介绍:
International Journal of Infectious Diseases (IJID)
Publisher: International Society for Infectious Diseases
Publication Frequency: Monthly
Type: Peer-reviewed, Open Access
Scope:
Publishes original clinical and laboratory-based research.
Reports clinical trials, reviews, and some case reports.
Focuses on epidemiology, clinical diagnosis, treatment, and control of infectious diseases.
Emphasizes diseases common in under-resourced countries.