Patient aggression toward dentists.

Background: Workplace violence toward health care professionals is both widespread and widely overlooked. Only 4 studies of aggression toward dentists have been published-none in the United States-with the prevalence of aggression ranging from 29% through 80%. The purpose of this study was to provide an initial estimate of rates of patient aggression in dental practices in the United States.

Patient aggression toward dental students.

Aggression from patients is one of the risks faced by healthcare workers during a typical work week. This risk begins during training. Although rates of patient aggression have been estimated for nursing students and medical residents, studies of aggression toward dental students have not been conducted.

Presence of pathogenic Escherichia coli is correlated with bacterial community diversity and composition on pre-harvest cattle hides.

Background: Since 1982, specific serotypes of Shiga toxin-producing Escherichia coli (STEC) have been recognized as significant foodborne pathogens acquired from contaminated beef and, more recently, other food products. Cattle are the major reservoir hosts of these organisms, and while there have been advancements in food safety practices and industry standards, STEC still remains prevalent within beef cattle operations with cattle hides implicated as major sources of carcass contamination. To investigate whether the composition of hide-specific microbial communities are associated with STEC prevalence, 16S ribosomal RNA (rRNA) bacterial community profiles were obtained from hide and fecal samples collected from a large commercial feedlot over a 3-month period.