Autochthonous Human Babesia divergens Infection, England.

We describe a case of autochthonous human Babesia divergens infection in an immunocompetent woman in England. The patient had fever, hemolysis, multiorgan failure, and 18% parasitemia. We confirmed B.

Methodological issues of retrospective surveys for measuring mortality of highly clustered diseases: case study of the 2014-16 Ebola outbreak in Bo District, Sierra Leone.

Background: There is a lack of empirical data on design effects (DEFF) for mortality rate for highly clustered data such as with Ebola virus disease (EVD), along with a lack of documentation of methodological limitations and operational utility of mortality estimated from cluster-sampled studies when the DEFF is high.

Objectives: The objectives of this paper are to report EVD mortality rate and DEFF estimates, and discuss the methodological limitations of cluster surveys when data are highly clustered such as during an EVD outbreak.

Methods: We analysed the outputs of two independent population-based surveys conducted at the end of the 2014-2016 EVD outbreak in Bo District, Sierra Leone, in urban and rural areas.

Genome-Wide Association Study Identifies Risk Loci for Cluster Headache.

Objective: This study was undertaken to identify susceptibility loci for cluster headache and obtain insights into relevant disease pathways.

Methods: We carried out a genome-wide association study, where 852 UK and 591 Swedish cluster headache cases were compared with 5,614 and 1,134 controls, respectively. Following quality control and imputation, single variant association testing was conducted using a logistic mixed model for each cohort.