Holidays and winter illnesses go hand in hand. Today on Post Reports, we unpack how to prevent the spread.As families face a “tripledemic” of highly contagious respiratory viruses, we turn to national health reporter Lena Sun to understand the latest on how to stay healthy this holiday season. From effective flu and covid vaccines to DIY air filters, we find out what she has learned to keep viruses at bay, as well as what happened when she pressed a leading health official about the current masking guidance. Coronavirus cases are on the rise again in many parts of the country, and this year’s surge in flu is the worst in more than a decade. It’s overwhelming hospitals and leaving many families out sick for weeks. Yet it’s unlikely that mask mandates are coming back anytime soon. And while the uptake of covid booster shots is still very low nationwide, new studies have found that the updated versions can prevent serious illness and deaths, especially among older adults.