Andrea L Beam

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Failure of passive transfer of immunity (FPT) in dairy replacement calves has been linked to increased neonatal morbidity and mortality and long-term decreases in productivity. The purpose of this study was to estimate the prevalence of FPT in US dairy heifer calves in 2007 and to use nationally representative data to investigate associations of FPT with(More)
Zebrafish (Danio rerio) is an emerging toxicity screening model for both human health and ecology. As part of the Computational Toxicology Research Program of the U.S. EPA, the toxicity of the 309 ToxCast™ Phase I chemicals was assessed using a zebrafish screen for developmental toxicity. All exposures were by immersion from 6-8 h post fertilization (hpf)(More)
Raising chickens in urban settings is a growing phenomenon in the United States. The United States Department of Agriculture's (USDA) National Animal Health Monitoring System (NAHMS) conducted a cross-sectional study to better understand health and management of privately owned chicken flocks, and Salmonella awareness among chicken owners, in three urban(More)
The objectives of this study were to estimate the prevalence of Salmonella for individual, pooled, and composite fecal samples and to compare culture results from each sample type for determining herd Salmonella infection status and identifying Salmonella serovar(s). During the U.S. Department of Agriculture National Animal Health Monitoring System Dairy(More)
Eukaryotic telomeres are variable at several levels, from the length of the simple sequence telomeric repeat tract in different cell types to the presence or number of telomere-adjacent DNA sequence elements in different strains or individuals. We have investigated the sequence organization of Xenopus laevis telomeres by use of the vertebrate telomeric(More)
Between December 2014 and June 2015, an outbreak of H5N2 HPAI caused the largest and most expensive agriculture emergency in U.S. Department of Agriculture-Animal and Plant Health Inspection Service history. The outbreak affected 21 states; 232 poultry farms (211 commercial and 21 backyard) were affected, and approximately 49.6 million birds were(More)
OBJECTIVE To identify factors associated with use of a veterinarian by small-scale food animal operations. DESIGN Cross-sectional descriptive survey. SAMPLE 16,000 small-scale farm or ranch operations in all 50 states. PROCEDURES Surveys were conducted via mail or telephone during 2011 for small-scale operations (gross annual agricultural sales(More)
This study describes a spring 2013 outbreak of porcine epidemic diarrhea virus (PEDv), using data from 222 swine sites in 14 counties area in 4 contiguous states in the United States. During the outbreak, the premises-level incidence of PEDv was 40.5 percent (90/222 sites). One of the three companies from which data were collected had a lower incidence(More)
The National Animal Health Monitoring System (NAHMS) Small-Enterprise Chicken study was conducted to better understand bird movement and biosecurity practices of commercial poultry operations having fewer than 20,000 chickens. A stratified random sample of 2511 operations having 1000-19,999 chickens was selected from a list maintained by the National(More)
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