Cultural diversity of traditions for the disposal of exfoliated teeth: Implications for researchers.

Objectives: For decades, researchers in anthropology and archaeology have used teeth, including exfoliated primary teeth, as fossil records of people's physical life experiences. Recently, researchers in psychiatry, epidemiology, environmental health and other fields have recognized the potential for teeth to serve as biomarkers of other early-life experiences, including trauma exposure and other types of psychosocial stress, which are potent determinants of later mental and physical health problems. Despite the emerging appreciation and value of teeth as biospecimens, little is understood about cultural beliefs and practices surrounding exfoliated teeth.

Bacterial composition in Swedish raw drinking water reveals three major interacting ubiquitous metacommunities.

Background: Surface raw water used as a source for drinking water production is a critical resource, sensitive to contamination. We conducted a study on Swedish raw water sources, aiming to identify mutually co-occurring metacommunities of bacteria, and environmental factors driving such patterns.

Methods: The water sources were different regarding nutrient composition, water quality, and climate characteristics, and displayed various degrees of anthropogenic impact.

Use of metagenomic microbial source tracking to investigate the source of a foodborne outbreak of cryptosporidiosis.

is a protozoan parasite of global public health importance that causes gastroenteritis in a variety of vertebrate hosts, with many human outbreaks reported yearly, often from ingestion of contaminated water or food. Despite the major public health implications, little is typically known about sources of contamination of disease outbreaks caused by Here, we study a national foodborne outbreak resulted from infection with via romaine lettuce, with the main goal to trace the source of the parasite. To do so, we combined traditional outbreak investigation methods with molecular detection and characterization methods (i.

Conservation of vaccine antigen sequences encoded by sequenced strains of Streptococcus equi subsp. equi.

Background: Streptococcus equi subspecies equi (S equi) is the cause of Strangles, one of the most prevalent diseases of horses worldwide. Variation within the immunodominant SeM protein has been documented, but a new eight-component fusion protein vaccine, Strangvac, does not contain live S equi or SeM and conservation of the antigens it contains have not been reported.

Objective: To define the diversity of the eight Strangvac antigens across a diverse S equi population.

Mental Health First Aid: A Systematic Review of Trainee Behavior and Recipient Mental Health Outcomes.

Objective: Mental Health First Aid (MHFA) is a globally disseminated course that trains members of the public to recognize and respond to mental health issues in their communities. Although substantial evidence suggests that MHFA training is associated with positive changes in knowledge, attitudes, and behavioral intent, little is known about how MHFA trainee-delivered aid supports mental health needs. This systematic review sought to summarize the extant research evaluating MHFA trainees' helping behaviors and the impacts of these behaviors on people experiencing a mental health problem (i.