Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs.
Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. 😷
Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs.
Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. 😷