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Wearing a facial mask can limit COVID-19 transmission. Measurements of communities' mask use behavior have mostly relied on self-report. This study's objective was to devise a method to measure the prevalence of improper mask use and no mask use in indoor public areas without relying on self-report. A stratified random sample of retail trade stores (public areas) in Louisville, Kentucky, USA, was selected and targeted for observation by trained surveyors during December 14–20, 2020. The stratification allowed for investigating mask use behavior by city district, retail trade group, and public area size. The total number of visited public areas was 382 where mask use behavior of 2,080 visitors and 1,510 staff were observed. The average prevalence of mask use among observed visitors was 96%, while the average prevalence of proper use was 86%. In 48% of the public areas, at least one improperly masked visitor was observed and in 17% at least one unmasked visitor was observed. The average prevalence of proper mask use among staff was 87%, similar to the average among visitors. However, the percentage of public areas where at least one improperly masked staff was observed was 33. Significant disparities in mask use and its proper use were observed among both visitors and staff by public area size, retail trade type, and geographical area. Observing unmasked and improperly masked visitors was more common in small (less than 1500 square feet) public areas than larger ones, specifically in food and grocery stores as compared to other retail stores. Also, the majority of the observed unmasked persons were male and middle-aged. [ABSTRACT FROM AUTHOR]

In September 2003, a consortium of bioterrorism and health education experts from the University of Louisville, the University of Kentucky, the Kentucky Department for Public Health, and the Louisville Metro Health Department received funding from the Health Resources and Services Administration (HRSA) to develop a broadly based bioterrorism education program for health professionals in the Commonwealth of Kentucky and the surrounding region. This grant will fund a series of presentations tailored to the needs of professionals in medicine, dentistry, public health, nursing, behavioral medicine, allied health, pharmacy, veterinary medicine, and agriculture, providing coordinated training both on site and through distance learning technology. This article outlines the major grant-funded activities envisioned for the grant years 2003 through 2005, focusing on the use of standardized patients and computerized biosimulators, the transdisciplinary partnerships of the universities involved, and the essential collaboration provided by the state and local health departments. [ABSTRACT FROM AUTHOR]