【用戶】加賴叫過去

【年級】高三下

【評論內容】Winter Heralds the Arrival of Influenza        Influenza is transmitted easily from person to person. You may come in contact with it today simply by talking to your colleague. Even if you are healthy, it may keep you in bed feeling miserable for weeks. Symptoms include fever, aching muscles, runny nose, cough, sore throat, and fatigue. For those who have preexisting health problems, influenza can be severe. What is influenza? It is a contagious disease caused by a virus that infects the respiratory tract of the body. It typically infects ten to twenty percent of the world’s population each flu season. How can you prevent it? A) Vaccination: The influenza vaccination is 70 to 90 percent effective. It’s a single shot given each year prior to the flu season.

【用戶】Angus

【年級】小二下

【評論內容】It’s a single shot given each year prior to the flu season.24. What is a flu vaccination?