Probable Evidence of Fecal Aerosol Transmission of SARS-CoV-
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A new study conducted in a high-rise apartment building in China suggests the faecal aerosols might have a role in the transmission of SARS- Cov2, as reported in the journal Annals of Internal Medicine.

The study objective was to investigate the temporal and spatial distributions of 3 infected families in a high-rise apartment building and examine the associated environment variables to verify the role of faecal aerosols.

Participants: 9 infected patients, 193 other residents of the building, and 24 members of the building's management staff.

Epidemiologic survey and quantitative RT- PCR analysed on throat swabs from the participants; 237 surface and air samples from 11 of the 83 flats in the building, public areas, and building drainage systems; and tracer gas released into bathrooms as a surrogate for virus-laden aerosols in the drainage system.

Results:
9 infected patients in 3 families were identified. The first family had a history of travel to the COVID-19 epicenter Wuhan, whereas the other 2 families had no travel history and later onset of symptoms.

No evidence was found for transmission via the elevator or elsewhere. The families lived in 3 vertically aligned flats connected by drainage pipes in the master bathrooms.

Both the observed infections and the locations of positive environmental samples were consistent with the vertical spread of virus-laden aerosols via these stacks and vents.

Limitation of the study was the inability to determine whether the water seals were dried out in the flats of the infected families.

Conclusion:
On the basis of circumstantial evidence, the fecal aerosol transmission may have caused the community outbreak of COVID-19 in this high-rise building.

Source: https://www.acpjournals.org/doi/10.7326/M20-0928
Dr. T●●●●z H●●●●●●i and 3 others like this6 shares
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