Bad news for parents: This year’s flu shot is “not a very good match” for a common strain of illness that’s especially tough on children, CNN reports. “It’s not a very good match for B/Victoria,” says Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, referring to the strain. “It’s not an awful match, but it’s not a very good match.” According to CDC data released last week, if you’re child is exposed to the B/Victoria strain, there’s only a 58 percent chance that their flu shot will effectively protect against it. That being said, Fauci says the shot could help protect kids from getting so sick that they develop life-threatening complications. So that’s reassuring!