SARS-Cov-2 (COVID-19) Nasal Pharyngeal and Oral Pharyngeal Wash (SNOW) Trial

Summary

Adults (aged 18-65 years) recently diagnosed with SARS-CoV-2 infection who use a 4-day combined intervention of nasal washes with 1% baby shampoo solution and oral gargles with Listerine Antiseptic® will have a reduced SARS-CoV-2 viral load compared to those using nasal and oral washes with normal saline. This combined intervention should be acceptable, tolerable and safe in this population. To test this, investigators are conducting a trial comparing the efficacy of a number of washes in reducing the oral and nasal SARS-CoV-2 viral load among adults.

Timeline

Start

2021-10-01

Primary completion

2026-05-30

Completion

2026-05-30

Publications

• Background Meister TL, Bruggemann Y, Todt D, Conzelmann C, Muller JA, Gross R, Munch J, Krawczyk A, Steinmann J, Steinmann J, Pfaender S, Steinmann E. Virucidal Efficacy of Different Oral Rinses Against Severe Acute Respiratory Syndrome Coronavirus 2. J Infect Dis. 2020 Sep 14;222(8):1289-1292. doi: 10.1093/infdis/jiaa471.
• Background Sungnak W, Huang N, Becavin C, Berg M, Queen R, Litvinukova M, Talavera-Lopez C, Maatz H, Reichart D, Sampaziotis F, Worlock KB, Yoshida M, Barnes JL; HCA Lung Biological Network. SARS-CoV-2 entry factors are highly expressed in nasal epithelial cells together with innate immune genes. Nat Med. 2020 May;26(5):681-687. doi: 10.1038/s41591-020-0868-6. Epub 2020 Apr 23.
• Background Shrestha NK, Marco Canosa F, Nowacki AS, Procop GW, Vogel S, Fraser TG, Erzurum SC, Terpeluk P, Gordon SM. Distribution of Transmission Potential During Nonsevere COVID-19 Illness. Clin Infect Dis. 2020 Dec 31;71(11):2927-2932. doi: 10.1093/cid/ciaa886.
• Background Cevik M, Tate M, Lloyd O, Maraolo AE, Schafers J, Ho A. SARS-CoV-2, SARS-CoV, and MERS-CoV viral load dynamics, duration of viral shedding, and infectiousness: a systematic review and meta-analysis. Lancet Microbe. 2021 Jan;2(1):e13-e22. doi: 10.1016/S2666-5247(20)30172-5. Epub 2020 Nov 19.
• Background Mohamed N. Early viral clearance among Covid-19 patients when gargling with povidone-iodine and essential oils: A pilot clinical trial. medRxiv 2020.09.07.20180448; https://doi.org/10.1101/2020.09.07.20180448 preprint
• Background "Tracking the Coronavirus at U.S. Colleges and Universities." New York Times. Last updated Dec. 11, 2020.

Drugs

Indications