Sujay Kansagra, MD | Sleep Doc for Kids (and adults) on Instagram: "The flu shot still helps even when the circulating strain is different from the one in the vaccine. Here’s why: Partial immunity: Even if the strain isn’t a perfect match, the vaccine often provides cross-protection. Your immune system recognizes shared components of the virus, which can reduce severity. Milder illness: Vaccinated people who do get the flu are less likely to have severe symptoms, pneumonia, hospitalization, or d