Carlos Solis
Ohio State University researchers collected 27 dust samples from daycares, schools, dorms, a library, a recreation center, and offices. To detect viruses, the team used two approaches: standard PCR (polymerase chain reaction) to amplify nucleic acid fragments, and a new sequencing method that captures RNA molecules left behind after viruses break down. They compared the samples to a library of about 200 potential pathogens to detect and classify multiple viruses at once.
The Full List
In total, dust samples contained 54 distinct viruses across all 27 samples. Confirmed pathogens included:
- SARS-CoV-2 (the virus that causes COVID-19),
- influenza virus,
- rhinoviruses — at least one type was present in 85% of samples,
- respiratory syncytial virus (RSV),
- adenovirus,
- norovirus,
- human papillomavirus (HPV),
- Epstein-Barr virus,
- MW polyomavirus, WU polyomavirus,
- human cytomegalovirus,
- and nonpathogenic viruses such as Torque teno virus.
The researchers also saw differences by building type: child care facilities had higher levels of MW polyomavirus, human cytomegalovirus, and WU polyomavirus — viruses linked to childhood infections.
Is Dust Infectious?
The team did not measure whether the viruses were viable — they didn’t test whether the detected particles could cause infection. For many viruses, residual molecules in dust are unlikely to be infectious, though more research is needed to be sure.
“Indoor dust accumulates biological material that occupants shed, integrating signatures from the air, surfaces, and human activity over time. Dust can act as a stable reservoir for microbial and viral nucleic acids and be used for high-resolution environmental monitoring,” the paper in Building and Environment says.
To reduce your risk, wash your hands, wipe work surfaces to remove dust, ventilate rooms, and perform regular damp cleaning.
Keeping Infections in Check
Senior author Karen Dannemiller emphasized the public-health value of the approach: “It’s crucial to understand broad ways to track disease in a community. Like wastewater monitoring, which detects disease clusters at a large scale, we’ve created an intermediate tool that offers similar advantages for smaller communities.”
Dust analysis could become an additional way to detect viral outbreaks in homes, schools, or offices and help target limited prevention and disinfection resources more effectively.
Based on reporting by Daily Mail
Photo: Unsplash
