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New nasal spray offers 99.99% protection against flu, pneumonia, COVID-19 | In treated mice, virus levels in the lungs dropped by more than 99.99%, with normal levels of inflammatory cells and cytokines observed, indicating effective protection against infection.

The results showed that the new nasal spray trapped twice as many droplets compared to natural mucus alone.

Researchers at Brigham and Women’s Hospital have developed a nasal spray that could provide broad-spectrum protection against various respiratory infections, including COVID-19, influenza, common cold viruses, and bacteria that cause pneumonia. The new study outlines how the spray, created by investigators at the hospital works to safeguard against both viral and bacterial pathogens that affect the respiratory system. “The formulation’s ability to inactivate a broad spectrum of pathogens, including the deadly PR8 influenza virus, demonstrates its high effectiveness,” noted co-senior author Yohannes Tesfaigzi in the press release.

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