The cold is the most commonly occurring illness in the entire world, with more than 1 billion colds per year reported in the United States alone. The common cold is a self-limiting illness caused by any 1 of more than 200 viruses. The common cold produces mild symptoms usually lasting only 5-10 days. In contrast, the "flu" (influenza), which is caused by a different class of virus, can have severe symptoms.
See the complete A-Z list of all the Cold and Flu related information or browse the current list of select resources.
Cold and Flu Related Resources
Cold and Flu Articles
- How Do I Know If I Have a Cold or Covid?
- Bird Flu (Avian Flu)
- Is It Possible to Have COVID-19 Without a Cough?
- Swine Flu
- Why Do I Cough in the Morning and at Night?
- Are Sore Ears a Symptom of Covid?
- Fever in Adults
- Which Flu Is Worse, A or B?
- How Do You Get Rid of a COVID Cough?
- Influenza (Flu) in Adults
- What Is Congestion Caused By?
- What Are the Stages of Flu Symptoms?
- What Are the 4 Main Symptoms of Sinusitis?
- Which One Is More Contagious, COVID-19 or Flu?
- What Are the First Signs of Getting the Flu?
Cold and Flu Images and Slideshows
- How to Get Rid of a Cold: Natural Remedies
- How to Prevent the Common Cold
- COVID-19: Don't Delay Doctor Visits Because of COVID
- Cold, Flu, & Cough: How to Clean After Illness
- Cold and Flu: What Doctors Do to Boost Their Immune Systems
- Cold, Flu, & Cough: Symptoms of Immune System Problems
- Lung and Respiratory: Signs That You May Have Had COVID-19
- Cold, Flu, and Cough: Things That Suppress Your Immune System
- Cold, Flu, and Cough: Why Do I Have the Chills Other Than Fever?
- Cold and Flu: The Truth About Hand Sanitizer
- What Your Nose Say About Your Health
- How Your Immune System Functions
- Cold, Flu, and Cough: 13 Foods to Eat When Fighting the Flu
- 16 Foods That Boost and Improve Your Immune System
- Ear Infections: All About Ear Conditions