A new study from Penn State College of Medicine suggests that the human coronavirus may be “inactivated” by use of oral antiseptics and mouthwash.
The hygiene products, the study says, may reduce the amount of virus in the mouth after infection and effectively reduce the spread of SARS-CoV-2, the coronavirus that causes COVID-19.
The research study was headed by Craig Meyers, a professor in the school’s department of microbiology and immunology and department of obstetrics and gynecology. Meyers led a team of physicians and scientists who replicated the interaction of the virus in the nasal and oral cavities with rinses and mouthwashes.
“While we wait for a vaccine to be developed, methods to reduce transmission are needed,” stated Meyers. “The products we tested are readily available and often already part of people’s daily routines.”
The team treated solutions containing a strain of human coronavirus with baby shampoo solutions, various peroxide antiseptic rinses and various brands of mouthwash. The results, which were published in the Journal of Medical Virology, indicated a decrease in virus cells.
“The 1% baby shampoo solution, which is often used by head and neck doctors to rinse the sinuses, inactivated greater than 99.9% of human coronavirus after a two-minute contact time,” the study states. “Several of the mouthwash and gargle products also were effective at inactivating the infectious virus. Many inactivated greater than 99.9% of virus after only 30 seconds of contact time and some inactivated 99.99% of the virus after 30 seconds.”
Meyers says clinical trials are needed to determine if these products can reduce the amount of virus COVID-positive patients or those with high-risk occupations may spread while talking, coughing or sneezing.
The study results are promising.
“Even if the use of these solutions could reduce transmission by 50%, it would have a major impact," he said.
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