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February 25 | Daily COVID-19 LST Report

Transmission & Prevention

· Researchers in Shanghai, China conducted an on-site analysis of COVID-19 surface contamination using a real-time nucleic acid extraction-free isothermal amplification kit. They collected 31 samples from 7 sites within the wards of the Chengdu Center of Disease Control and found a high transmissibility from positive patients, most concentrated on ECG fingertips, bedrails, remote controls, and cupboards, in decreasing order. The findings suggest that paying extra attention to commonly touched surfaces when cleaning hospital rooms may have a greater impact on preventing nosocomial COVID-19 transmission.

Researchers from Emory University in conjunction with the CDC investigated the extent of aerosolized SARS-CoV-2 particles, by using 8 National Institute for Occupational Safety and Health (NIOSH) BC 251 two-stage cyclone samples in six units throughout a tertiary care hospital in Atlanta, Georgia. They collected a total of 528 aerosolized samples from medical units, ICUs, inpatient hallways, nursing stations and visitor corridors, all of which were negative by rRT-PCR for SARS-CoV-2. The authors note their promising results suggest a decreased likelihood of transmission as compared to previously thought, however, they acknowledge there is still much to be learned about COVID-19, and every precautionary step should continue to be taken to decrease exposure of health care personnel.

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