It is our great pleasure to invite you for 5th Biennial Virtual Conference of PAi and International Symposium on “Probiotics and Immunity: Way Forward to Microbial Therapy” being organized by Probiotic Association of India (PAi) in association with ICAR-National Dairy Research Institute, Karnal, India on November 19-20, 2020. The aim of the conference is to highlight the role and mechanisms by which probiotics could modulate host immunity and play a role in abating associated diseases, since it is well known that an individual’s immunity is greatly affected by their gut environment. In the current scenario of Covid-19 it is apt to discuss the antiviral, antibacterial and anti-allergic beneficial effects of probiotic bacteria and their bioactive molecules.