Rising Threats of Viral Infections: Exploring Probiotics as Antiviral Agents

Viral infections are the most common etiological agents behind a wide range of human illnesses, with significant and widespread effects on human health. Vaccines have been developed to combat viral infectious diseases in various ways. However, the high rate of mutation in viruses, specifically RNA viruses, makes vaccines and medications for viral infectious diseases ineffective. Meanwhile, published research continues to offer insight into the efficacy of probiotics as antiviral agents. Various clinical findings reveal those specific probiotic strains aid in the prevention of viral and bacterial infections. Probiotics have been used to prevent and treat common viral infections such as rotavirus, coronavirus, hepatitis, human papillomavirus, human immunodeficiency virus, and herpes simplex viruses etc. The studies compiled in this review demonstrate the value of probiotics in the treatment and prevention of several viral infections using in vitro and in vivo trials in both experimental animals and humans and also provide perspectives on probiotics' probable antiviral mechanisms. Although the initial findings are promising, the current research is limited by small sample sizes, short study durations, and a lack of diversity in population groups. Consequently, further research with larger, more diverse cohorts and extended follow-up periods is necessary to thoroughly assess and confirm the effectiveness of this probiotic treatment against these severe infectious diseases.

Graphical Abstract