Results:
From a total of 93 records, 21 studies were obtained and classified into three domains based on the efficacy of probiotics on 1)the level of interleukins (n=7), 2)virus titres reduction (n=2), and 3)antibody production (n=12). The suppuration of proinflammatory interleukins and type I interferon (IFN) production seemed to be the main anti-viral strategy of probiotics.