Related Experiment Video
Updated: Jun 20, 2026
09:57
Development and Validation of a Quantitative PCR Method for Equid Herpesvirus-2 Diagnostics in Respiratory Fluids
Published on: March 17, 2016
Querying Q fever: spatiotemporal patterns and environmental drivers in French Guiana
Anissa Desmoulin1,2,3, Amanda Esparon2,3,4, Fabrice Quet2,5
1Department of Infectious and Tropical Diseases, CHU de La Réunion Sites Sud, Saint-Pierre, Reunion Island anissa.desmoulin@hotmail.fr.
BMJ Global Health
|March 2, 2026
Summary
Q fever (Coxiella burnetii) hotspots were identified in French Guiana, linked to forests, wildlife, and housing. Public health efforts should target these areas, including slaughterhouses and farms.
Area of Science:
- Epidemiology
- Spatial Analysis
- Environmental Health
Background:
- Q fever, a zoonotic infection caused by Coxiella burnetii, is hyper-endemic in French Guiana.
- The primary reservoir of Coxiella burnetii in French Guiana is debated, likely involving wild fauna.
- Human Q fever cases in the Cayenne area require spatiotemporal investigation and environmental factor analysis.
Purpose of the Study:
- To identify spatiotemporal clusters of human Q fever in the Cayenne area.
- To investigate the relationships between Q fever occurrence and environmental factors using remote sensing data.
- To guide public health actions and research by pinpointing high-risk areas.
Main Methods:
- Retrospective study of human acute Q fever cases (2007-2017).
- Spatial autocorrelation and spatiotemporal scanning for cluster identification.
- Generalized Poisson additive model to analyze risk factors including remote sensing data.
Main Results:
- 513 cases of acute Q fever were analyzed.
- Six significant Q fever hotspots were identified, with an epicentre near Mont Rémire.
- Risk factors included proximity to forests, wildlife proximity, slaughterhouses, and housing density.
Conclusions:
- Identified priority areas for public health interventions: slaughterhouses, farms, and surrounding wildlife.
- Highlights the importance of environmental and wildlife factors in Q fever transmission in French Guiana.
- Provides a spatial framework for targeted Q fever control strategies.
Related Concept Videos
01:26Patterns of Fever
Before understanding the types and patterns of fever, it is essential to know its phases.
01:26Principles of Disease Surveillance
Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
01:27Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
01:23Investigation of Disease Outbreaks
Multistate foodborne outbreaks pose significant public health risks and require meticulous investigation to identify sources and implement control measures. The Centers for Disease Control and Prevention (CDC) utilizes a dynamic seven-step process for these investigations, integrating data from laboratories, interviews, and environmental assessments to protect public health.Outbreak Detection: The detection of multistate outbreaks typically begins with PulseNet, the CDC's national laboratory...
01:26Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
01:18Yellow Fever
Yellow fever is a viral hemorrhagic disease caused by the yellow fever virus (YFV), a member of the Flaviviridae family. It is transmitted primarily by Aedes and Haemagogus mosquitoes in tropical and subtropical regions of Africa and South America. After transmission through a mosquito bite, the virus initially replicates in skin-resident immune cells such as dendritic cells and macrophages. These cells then migrate to the lymph nodes, where viral replication increases, eventually leading to...