https://www.aarp.org/Symptoms-Guide/Cold-Flu-COVID
广告Learn The Difference Between Flu, Cold, & COVID Symptoms & Advice To Avoid Getting Sick. Your Cough May Tell You Which It Might Be. Learn About Their Distinguishing Symptoms.
Senior Health · Live Your Best Life · Wellness & Longevity
Types: Healthy Living, Health & Wellness Tips, Conditions & Treatments