There is no evidence that regularly rinsing the nose with saline has protected people from infection with the new coronavirus. There is some limited evidence that regularly rinsing the nose with saline can help people recover more quickly from the common cold. However, regularly rinsing the nose has not been shown to prevent respiratory infections. Originally published on the World Health Organization, Emergency, Coronavirus disease (COVID-19) pandemic site under the Mythbusters section.
World Health Organization
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