If one person gets H1N1 flu, will the entire family get it?

It is possible to get infected. "Jia Liu" refers to influenza A. Influenza A is a contagious respiratory illness, and the virus spreads through airborne droplets. Whether all family members will become infected when one person has influenza A depends on the preventive measures taken by household members and the conditions for viral transmission. The primary transmission route of the influenza A virus is via respiratory droplets, such as those produced during coughing, sneezing, or talking. If someone in the household is infected with influenza A, others who do not take protective measures—such as wearing masks, maintaining indoor ventilation, and frequently washing hands—can indeed become infected.