05 Feb 2019 --- Heat waves can reduce the body’s immune response to the influenza virus, which could, in turn, have implications for how climate change may impact the future of vaccinations and nutrition, according to a new study from the University of Tokyo. The role that the heat plays in reducing nutritional intake may be a crucial reason behind the weaker immune response. The researchers recommend that nutritional supplementation is adopted in addition to appropriate vaccines in food-insecure communities.