The protective effect of probiotics on the treatment and improvement of respiratory disease caused by COVID-19 virus

The new viral pandemic of COVID-19 is caused by the new coronavirus (SARS-CoV-2), which has plunged the world into an economic and health crisis. The lack of specific treatment strategies is necessary to prevent the spread of infection caused by such a previously unknown viral agent. Evidence suggests that COVID-19 disease is associated with intestinal dysbiosis. Probiotics are living microbes that benefit human health by changing the composition of intestinal microbiota. The close relationship between the gastrointestinal tract and the respiratory tract indicates the influence of one on the function of the other. Emerging studies show the ability of probiotics to regulate immune responses in the respiratory tract. The efficacy of probiotics in several respiratory infections has been previously studied. Therefore, this study aimed to understand the available safety information provided by different species of probiotic bacteria in the process of improving the symptoms of respiratory infection caused by the COVID-19 virus