A combination of colostrum and Bifivir, a supplement containing prebiotics and probiotics, was more effective at preventing flu than the flu vaccine

The adjusted effectiveness rating of the 2018 to 2019 flu vaccine reported by the Centers for Disease Control and Prevention ranged from 12% to 14% in people age 50 and older

Colostrum boosts production of natural killer (NK) cells, a type of white blood cell that is part of the innate immune system

Consider using several strategies to support your NK cells, including regular exercise, beta-glucans, probiotics and melatonin

Dr Mercola; Colostrum More Effective Than Flu Vaccine