Article headlines don't always line up with the contents. > Some people have taken it to mean that a lack of exposure to pathogens such as RSV and influenza ha

Article headlines don't always line up with the contents. > Some people have taken it to mean that a lack of exposure to pathogens such as RSV and influenza has irrevocably damaged the immune system, an idea that Matthew Miller, an immunologist at McMaster University in Hamilton, Canada, calls “nonsense”.