Cluster Investigation

A review of an unusual number—real or perceived—of health events—e.g., reports of cancer—grouped together in time and location
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The Breteau and household indices identified in the household cluster investigation are above WHO thresholds of 20% and 5%, respectively, indicating that Yuma County has an elevated risk for local DENV transmission (5).
When subject matter experts in the Environmental Medicine Program of the US Army Public Health Command (USAPHC) are alerted to a reported "cluster" of cancer cases with a potential environmental exposure, the decision process determining whether the reported situation warrants a cancer cluster investigation should follow the scientific guidelines set forth by the Centers for Disease Control and Prevention (CDC) for investigating clusters of health events.
Increased time before cluster investigation increases the likelihood of prey being entirely consumed or scavenged by other predators (e.g.
Researchers at the Johns Hopkins Bloomberg School of Public Health found that 95 percent of state health departments surveyed (N = 37) reported having a cancer cluster investigation or inquiry.
The scope of this cancer cluster investigation exceeded any previous study of pediatric leukemia.
"In addition, problems associated with cluster investigation may affect SAHSU reports, " it adds.
The Cambodian National Center for HIV/AIDS (acquired immunodeficiency syndrome), Dermatology and Sexually Transmitted Diseases (NCHADS) investigated the outbreak in collaboration with the University of Health Sciences in Phnom Penh and members of the Roka Cluster Investigation Team.
South Carolina tuberculosis genotype cluster investigation: a tale of substance abuse and recurrent disease.
Concerns raised by community residents in the initial stages of the El Paso cluster investigation included the possible impact of a local metals smelter, particularly impacts from past operations at the facility and neighborhood environmental contamination.
In addition the relationship between the environment and disease, and the science underlying cluster investigation (e.g., definition of geographic boundaries, calculation of expected rates of disease, population demographics, etiology of cancer, statistical issues) are complex topics and can be difficult for persons without scientific education and training to comprehend (Turney 1996).
When the cluster investigation is done, the results are most likely to be inconclusive.
Field teams applied experience in contact tracing and active case finding accrued over the course of the previous year, such as during the Saint Paul Bridge cluster investigation (3).