The COVID-19 pandemic may have dominated the news for nearly two years, but flu season still happens. Because both flu and COVID-19 are threats at the same time, it can be even more important to strengthen immunity during the winter months. Getting vaccinated, following basic health guidelines, and ensuring your body has the nutrients it needs are some tips for boosting immunity at the height of flu season. PatchAid Vitamin Patches can be a tool for strengthening immunity at this time of year.