Share on PinterestExperts warn that vaccine nationalism could delay the achievement of global herd immunity.Photo editing by Stephen Kelly; Martin Barraud/Getty ImagesVaccine access and vaccination rates are high in high-to-upper-income countries but remain low to…

How and why does diet influence immune function?
We may take it for granted that our diet can influence the way our immune systems work. But how and why does what we eat impact the immune response? In this Honest Nutrition feature, we…