Lockdown could have damaged our resistance to germs. Many scientists believe that exposure to microbes, from kissing to sharing dips, are essential in fine-tuning our immune systems and protecting us from diseases. Many also believe that being too clean can cause defects in it. But what’s happened to our immune systems in lockdown? Amelia Tait examines scientists' concerns about a rise in immunological disorders caused by lockdown and reveals what we can do to counteract this issue.