Flu Vaccine Philippines 2026: Complete Guide to Influenza Vaccination
Understanding Influenza Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses. These viruses infect the nose, throat, and sometimes the lungs, and they spread easily from person to person through respiratory droplets released when an infected individual coughs, sneezes, or speaks. Although many people recover within several days, […]