Model Establishes How Sinks and Faucets Disperse Microbial Pathogens as Aerosols
Outcome/Accomplishment
Researchers have established a model to track how household or public-use sinks (such as in hospitals) disperse viable microbes as aerosols, thus detecting direct links between environmental sources and infection risk. The research was supported by the National Science Foundation (NSF)-funded Precision Microbiome Engineering (NSF PreMiEr) an Engineering Research Center (ERC) based at Duke University.
Impact/Benefits
The research led to the first measurements of sink bioaerosol emission factors and transport, revealing an underrecognized airborne transmission pathway. The measurements quantify infection risk from environmental reservoirs, enabling risk-informed design in healthcare settings.
Explanation/Background
Hospital sink drains are increasingly considered reservoirs for dangerous pathogens, and work at NSF PreMiEr has also implicated faucets in generating bioaerosols and larger droplets. Researchers found that while airborne concentrations were low, they represent a small but measurable inhalation risk in hospitals with heavily colonized plumbing. The findings help to understand how hospital sinks may contribute to healthcare-associated infections and reinforce the need for effective plumbing microbiome management strategies.
NSF PreMiEr researchers also found how different sinks developed distinctly different communities over time, depending on how they were used and cleaned. The findings suggest that occupant behaviors including exposure to cleaning products strongly influence what lives in household plumbing, with implications for understanding and managing microbial risks in both residential and healthcare environments.
Location
Durham, North CarolinaStart Year
Biotechnology and Healthcare
Biotechnology and Healthcare
Lead Institution
Core Partners
Fact Sheet
Outcome/Accomplishment
Researchers have established a model to track how household or public-use sinks (such as in hospitals) disperse viable microbes as aerosols, thus detecting direct links between environmental sources and infection risk. The research was supported by the National Science Foundation (NSF)-funded Precision Microbiome Engineering (NSF PreMiEr) an Engineering Research Center (ERC) based at Duke University.
Location
Durham, North CarolinaStart Year
Biotechnology and Healthcare
Biotechnology and Healthcare
Lead Institution
Core Partners
Fact Sheet
Impact/benefits
The research led to the first measurements of sink bioaerosol emission factors and transport, revealing an underrecognized airborne transmission pathway. The measurements quantify infection risk from environmental reservoirs, enabling risk-informed design in healthcare settings.
Explanation/Background
Hospital sink drains are increasingly considered reservoirs for dangerous pathogens, and work at NSF PreMiEr has also implicated faucets in generating bioaerosols and larger droplets. Researchers found that while airborne concentrations were low, they represent a small but measurable inhalation risk in hospitals with heavily colonized plumbing. The findings help to understand how hospital sinks may contribute to healthcare-associated infections and reinforce the need for effective plumbing microbiome management strategies.
NSF PreMiEr researchers also found how different sinks developed distinctly different communities over time, depending on how they were used and cleaned. The findings suggest that occupant behaviors including exposure to cleaning products strongly influence what lives in household plumbing, with implications for understanding and managing microbial risks in both residential and healthcare environments.