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Particulate matter (PM(2 5)) as a potential SARS-CoV-2 carrier #MMPMID33510270
Nor NSM; Yip CW; Ibrahim N; Jaafar MH; Rashid ZZ; Mustafa N; Hamid HHA; Chandru K; Latif MT; Saw PE; Lin CY; Alhasa KM; Hashim JH; Nadzir MSM
Sci Rep 2021[Jan]; 11 (1): 2508 PMID33510270show ga
The rapid spread of the SARS-CoV-2 in the COVID-19 pandemic had raised questions on the route of transmission of this disease. Initial understanding was that transmission originated from respiratory droplets from an infected host to a susceptible host. However, indirect contact transmission of viable virus by fomites and through aerosols has also been suggested. Herein, we report the involvement of fine indoor air particulates with a diameter of = 2.5 microm (PM(2.5)) as the virus's transport agent. PM(2.5) was collected over four weeks during 48-h measurement intervals in four separate hospital wards containing different infected clusters in a teaching hospital in Kuala Lumpur, Malaysia. Our results indicated the highest SARS-CoV-2 RNA on PM(2.5) in the ward with number of occupants. We suggest a link between the virus-laden PM(2.5) and the ward's design. Patients' symptoms and numbers influence the number of airborne SARS-CoV-2 RNA with PM(2.5) in an enclosed environment.