Evaluation of face shields used during aerosol generating procedures.

Transnasal flexible laryngoscopy is considered an aerosol generating procedure. A negative pressure face shield (NPFS) was developed to control aerosol from the patient during laryngoscopy. The purpose of this study was to determine the effectiveness of the NPFS at controlling virus aerosol compared to a standard disposable plastic face shield.

Comparison of virus aerosol concentrations across a face shield worn on a healthcare personnel during a simulated patient cough.

Background: Patients diagnosed with coronavirus disease 2019 (COVID-19) aerosolize severe acute respiratory coronavirus virus 2 (SARS-CoV-2) via respiratory efforts, expose, and possibly infect healthcare personnel (HCP). To prevent transmission of SARS-CoV-2 HCP have been required to wear personal protective equipment (PPE) during patient care. Early in the COVID-19 pandemic, face shields were used as an approach to control HCP exposure to SARS-CoV-2, including eye protection.

Use of prototype side stream filtration system to control dust levels in a commercial swine farrowing building.

Swine meat provides an essential global food source. Due to economies of scale, modern U.S.

Self-reported respiratory health symptoms and respiratory protection behaviors of young adult hog producers in the United States.

Introduction And Methods: In this study, we evaluated self-reported respiratory symptoms during agricultural work, respiratory protection use and experience, and perceived value of receiving respirators using Gear Up for Ag Health and Safety Program™ pre- and post-surveys from 703 to 212 young adult hog producers in the United States. To our knowledge, this is one of the most extensive survey data sets on self-reported respiratory symptoms and respiratory protection behaviors of collegiate-aged young adults working in US livestock production.

Results: About one-third (37%) of young adult hog producers stated that they have experienced cough, shortness of breath, fever, and chills after working in dusty areas on the farm.

Development of Shortened Enrichment Methods for Detection of Typhimurium Spiked in Milk.

Rapid and accurate testing of pathogenic in dairy products could reduce the risk of exposure to the bacterial pathogens for consumers. This study aimed to reduce the assessment time needed for enteric bacteria recovery and quantification in food using the natural growth properties of Typhimurium ( Typhimurium) in cow's milk and efficiently using rapid PCR methods. Over 5 h of 37 °C enrichment, culture and PCR methods measured increases in the non-heat-treated Typhimurium concentration at similar rates, with an average increase of 2.

Evaluation of aerosols in a simulated orthodontic debanding procedure.

Dental practitioners may be at risk for exposure to severe acute respiratory syndrome corona virus 2 when performing aerosol generating procedures. Though recent evidence suggests that coronavirus may be transmitted through aerosol generating procedures, it is unknown whether common procedures performed in dental clinics generate aerosol. The aim of this study was to simultaneously quantify airborne concentrations of the bacteriophage MS2 near the oral cavity of a dental mannequin and behind personal protective equipment (i.

Safety Measures, Pesticide Concerns and Resources Utilized among Young Adult Workers: A Brief Report.

Introduction: Resources on pesticide information are widely available; however, little is known about the concerns young agricultural workers have about pesticides, whether they use existing resources to find information about pesticides, and how these resources influence safety behaviors such as personal protective equipment (PPE) use.

Objectives: To examine demographic characteristics, safety measures, concerns about pesticide use and resources for pesticide information.

Methods: Young agricultural workers were recruited through three collegiate agricultural programs and completed an online questionnaire related to pesticide safety and use.

Preliminary investigation of a hypertonic saline nasal rinse as a hygienic intervention in dairy workers.

Livestock workers experience an increased burden of bioaerosol-induced respiratory disease including a high prevalence of rhinosinusitis. Dairy operations generate bioaerosols spanning the inhalable size fraction (0-100 μm) containing bacterial constituents such as endotoxin. Particles with an aerodynamic diameter between 10 and 100 μm are known to deposit in the nasopharyngeal region and likely affect the upper respiratory tract.

Determination of murine norovirus aerosol concentration during toilet flushing.

Murine norovirus (MNV) was used as a surrogate for human viral pathogens (e.g., norovirus) to determine if toilet flushing resulted in the aerosolization of virus.

Agricultural Cooperatives in Mental Health: Farmers' Perspectives on Potential Influence.

Agricultural cooperatives are formed to promote farmers' economic, social, and legislative interests. Their role in influencing mental health is less known. We characterized farmers' experiences with cooperatives and identified the potential impact of cooperatives in promoting mental health.

Urban Particulate Matter Impairment of Airway Surface Liquid-Mediated Coronavirus Inactivation.

Air pollution particulate matter (PM) is associated with SARS-CoV-2 infection and severity, although mechanistic studies are lacking. We tested whether airway surface liquid (ASL) from primary human airway epithelial cells is antiviral against SARS-CoV-2 and human alphacoronavirus 229E (CoV-229E) (responsible for common colds), and whether PM (urban, indoor air pollution [IAP], volcanic ash) affected ASL antiviral activity. ASL inactivated SARS-CoV-2 and CoV-229E.

Laser plume containment during flexible transnasal laryngoscopy.

Objective: To evaluate a negative pressure microenvironment designed to contain laser plume during flexible transnasal laryngoscopy.

Methods: The Negative Pressure Face Shield (NPFS) was previously reported as well tolerated with initial use on 30 patients. Diagnostic transnasal laryngoscopy was performed on an additional 108 consecutive patients who were evaluated by questionnaires and sequential pulse oximetry.

Association of Exposure to Cattle with Self-Reported History of TB Among Dairy Workers.

Background: Mycobacterium bovis (bTB) is a potential health hazard to dairy workers. This study uses the One Health wholistic framework for examining bovine tuberculosis (TB) and its relationship to human health. This approach can help bridge surveillance data gaps and contribute to disease control and prevention programs for dairy farm workers, cattle, and the environment.

OSHA Voluntary Respirator Use: Challenges incurred with use of N95 filtering facepiece respirators during the COVID-19 pandemic.

This article discusses several lessons learned in dealing with the interpretation of the Occupational Health and Safety Administration (OSHA) Voluntary Use provision of the Respiratory Health Standard at health-care facilities during the COVID-19 pandemic in the United States. This includes (but is not limited to) (a) confusion about OSHA policy and procedures when health-care workers brought outside personal protective equipment (PPE; N95 filtering facepiece respirators) into the workplace; (b) challenges in adhering to guidelines stated in Appendix D of the Respiratory Protection Standard; (c) difficulty in achieving respirator fit testing for workers; and (d) vague or inconsistent determination of "non-hazardous" environments (concerning COVID-laden droplets and aerosols). The purpose was to identify gaps in knowledge to help policy makers, enforcement personnel, safety managers, and health-care workers in the United States prepare for similar future events involving PPE shortages.

Bovine Tuberculosis Case Intervention Using the T.SPOT. Assay to Screen Dairy Workers in Bailey County, Texas.

One potential exposure on a dairy farm is or bovine tuberculosis (bTB)-an infectious zoonotic pathogen. The prevalence of tuberculosis among dairy workers in the U.S.

The Optimization of Methods for the Collection of Aerosolized Murine Norovirus.

Globally, norovirus is the most common gastroenteritis causing pathogen. Annually, norovirus causes 685 million cases of acute gastroenteritis and 200,000 deaths, worldwide. Recent evidence has suggested that norovirus can also be spread via aerosolization; however, an indoor generation source has yet to be determined.

Association of Category of Cattle Exposure with Tuberculosis Knowledge among Dairy Workers in Bailey County, Texas.

To determine the knowledge of tuberculosis (TB) among dairy workers in Bailey County, Texas. A cross-sectional study design was used to collect 225 survey responses concerning knowledge of TB among dairy workers on 10 dairy farms in Bailey County, Texas. Subjects used iPad tablets to log responses to 15 demographic questions and a 17-item TB knowledge quiz, measured by: (1) TB characteristics, (2) TB transmission, (3) TB symptoms, (4) TB diagnosis, (5) TB treatment, and (6) bovine TB.

Bioaerosols generated from toilet flushing in rooms of patients with infection.

Background: Clostridioides difficile infection (CDI) is the most frequently reported hospital-acquired infection in the United States. Bioaerosols generated during toilet flushing are a possible mechanism for the spread of this pathogen in clinical settings.

Objective: To measure the bioaerosol concentration from toilets of patients with CDI before and after flushing.

Reliability of observational- and machine-based teat hygiene scoring methodologies.

Removal of teat-end debris is one of the most critical steps in the premilking process. We aimed to estimate inter- and intra-rater reliability of an observation-based rating scale of dairy parlor worker teat-cleaning performance. A nonrandom sample of 8 experienced raters provided teat swab debris ratings scored on a 4-point ordinal visual scale for 175 teat swab images taken immediately after teat cleaning and before milking unit attachment.

Bioaerosol concentrations generated from toilet flushing in a hospital-based patient care setting.

Background: In the United States, 1.7 million immunocompromised patients contract a healthcare-associated infection, annually. These infections increase morbidity, mortality and costs of care.

Pulmonary function and airway inflammation among dairy parlor workers after exposure to inhalable aerosols.

Background: Inhalation exposure to organic dust causes lung inflammation among agricultural workers. Due to changes in production and work organization, task-based inhalation exposure data, including novel lung inflammation biomarkers, will inform exposure recommendations for dairy farm workers.

Methods: Linear regression was used to estimate the associations of airborne exposure to dust concentration, endotoxin, and muramic acid with pulmonary outcomes (i.

Evaluation of a sprinkler cooling system on inhalable dust and ammonia concentrations in broiler chicken production.

Workers are exposed to dust in broiler chicken production during daily work activities. Poultry dust may contain inflammatory agents (e.g.

Full-shift and task-specific upper extremity muscle activity among US large-herd dairy parlour workers.

US large-herd dairy parlour workers experience a high prevalence of musculoskeletal symptoms in the upper extremity. The purpose of this study was to estimate and compare full-shift and task-specific muscle activity of the upper extremity among parlour workers. Surface electromyography data were recorded continuously throughout a full work shift for each participant (n = 60).

Effect of a novel teat preparation system on upper extremity muscle activity among U.S. large-herd dairy parlor workers.

Background: Dairy production in the U.S. is moving towards large-herd milking operations resulting in an increase in task specialization and work demands.