Observational studyThe American journal of tropical medicine and hygiene2023
Trends in the Incidence of Japanese Spotted Fever in Japan: A Nationwide, Two-Decade Observational Study from 2001-2020.
Observational study in The American journal of tropical medicine and hygiene, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 15 citations in OpenAlex.
- Delayed Minocycline Initiation from Symptom Onset and Severe Outcomes in Japanese Spotted Fever: A Single-Center Retrospective Study in Eastern Hiroshima, Japan.JMA journal · 2026Article
- Article
- Rash and Eschar in Japanese Spotted Fever.The American journal of tropical medicine and hygiene · 2026Article
- Article
- Trends in Japanese Spotted Fever Outbreaks in Fukuyama City of Hiroshima Prefecture in Japan, a High-incidence Area.JMA journal · 2025Article
- Japanese Spotted Fever with Severe Myositis: A Diagnostic Challenge.Internal medicine (Tokyo, Japan) · 2025Article
- Trends in the incidence of severe fever with thrombocytopenia syndrome in Japan: an observational study from 2013 to 2022.Scientific reports · 2025Observational
- Projecting the potential distribution ofFrontiers in public health · 2025Article
- Article
- Analysis of Differences in Characteristics of High-Risk Endemic Areas for Contracting Japanese Spotted Fever, Tsutsugamushi Disease, and Severe Fever With Thrombocytopenia Syndrome.Open forum infectious diseases · 2024Article
- A Japanese Boy With Spotted Fever and Overlapping Symptoms of Kawasaki Disease: A Case Report.Cureus · 2024Article
- Article
- Clinical Characteristics and Diagnostic Prediction of Severe Fever with Thrombocytopenia Syndrome and Rickettsiosis in the Co-Endemic Wakayama Prefecture, Japan.Medicina (Kaunas, Lithuania) · 2023Article
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Authors and funding
6 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The worldwide spread of tick-borne diseases (TBDs) has become a public health concern. Therefore, this study aimed to clarify trends in the incidence of Japanese spotted fever (JSF), one of Japan's most prevalent TBDs. Weekly infectious disease reports were used to calculate the annual incidence rates (AIRs) of JSF. Data were stratified by age and sex, and joinpoint regression analysis was performed to estimate the annual percentage change (APC). AIR and APC were geographically compared among the 47 prefectures. A total of 3,453 JSF cases were observed from 2001 to 2020. The AIR per 100,000 population was 0.03 in 2001, which increased approximately 10-fold to 0.33 in 2020. The average APC (AAPC) during the study period was 12.3% (95% CI: 10.7-13.9). By age group, the incidence of JSF increased more rapidly among the older population: 11.5% (95% CI: 10.1-12.9) in those aged ≥ 65 years and 8.9% (95% CI: 6.4-11.5) in those aged < 50 years. Although the AIR over the past two decades was higher in climatically warm regions located in southwestern Japan and on the Pacific coast, increases in the AAPC were notable in colder regions located in eastern Japan. The incidence of JSF continues to increase in Japan, especially among older populations and in eastern prefectures, where the disease has not been previously diagnosed.
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