Some of the body’s defences generated after an infection of the common cold could help to ward off the virus that causes Covid-19, researchers have said.A small study found that people with high levels of T cells – generated after infection with other coronaviruses such as the common cold – were less likely to catch Covid-19. But the authors stressed that vaccination was the best way a person could protect themselves against Covid-19. The new study, conducted by experts at Imperial College Londo

Common colds may prime the immune system against Covid, scientists believe, after finding that some people never develop an infection despite repeated exposure to the virus. Researchers at University College London( UCL) have discovered that some people have natural protection against Covid and seem to fight off an infection using pre-existing memory T-cells.T-cells remember past infections and circulate in the body looking for invaders.... However, it was unclear until now what was triggering