![]() ![]() ![]() All the collection sites, except one (18/19, 94.7%) had at least one environmental surface sample contaminated. A total of 97 samples (24.2%) tested positive for SARS-CoV-2 by RT-qPCR using the CDC-USA protocol. A total of 400 surface samples were collected in February 2021 in the City of Recife, Northeastern Brazil. Here, we investigated the presence of SARS-CoV-2 on high-touch surfaces in a large city in Brazil, one the most affected countries by the COVID-19 pandemic in the world. Formulation TF-B lowered each test virus by greater than 3-log 10 to non-detectable levels on all carriers in demonstration of residual antiviral activity.Īlthough SARS-CoV-2 surface contamination has been investigated in health care settings, little is known about the SARS-CoV-2 surface contamination in public urban areas, particularly in tropical countries. Formulation TF-A demonstrated variable residual efficacy against the three viruses, achieving log 10 reductions of 1.62, 3.33, and 0.92, respectively. The objective of this study was to evaluate two commercially available, ready-to-use quaternary ammonium compound-based disinfectants (one of which also contains a surface binding agent) for antiviral activity against Influenza A (H1N1), human coronavirus 229E, and SARS-CoV-2 (Washington) following a rigorous procedure of wear and abrasions with regular re-inoculations of virus in the presence of a 6% organic soil load. Quaternary ammonium compounds are highly diverse in structure and are among the most widely utilized antimicrobial agents. ![]() Most are enveloped respiratory viruses that are vulnerable to inactivation by a broad spectrum of antimicrobial actives. Human pathogenic viruses that are present in bioaerosols released by coughing, sneezing, or breathing can contaminate fomites and other inanimate environmental surfaces. ![]()
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