The H1N1 swine flu virus appeared in the U.S. in April 2009 and never went away. After sweeping the globe, U.S. H1N1 swine flu cases surged as schools opened in the fall. What is H1N1 swine flu? What can we do about it? WebMD answers your questions.
What is swine flu?
What are swine flu symptoms?
Who is at highest risk of H1N1 swine flu?
Help! I've been exposed to swine flu. What should I do?
If I think I have swine flu,...
What's the difference between colds and the flu? A typical cold causes a runny nose (the discharge is usually clear, but it could be yellow or green in the mornings), body aches, coughing, and sometimes a mild fever (usually for the first 3 to 4 days). By day four or five, you should be well on your way to recovery.
Flu, on the other hand, can produce all those symptoms, plus headaches, fatigue, and most significantly a higher fever.
Colds and flu are both caused by viruses, not bacteria, so it's really just time that will make them go away. That said, both ailments can morph into more serious conditions, including sinus infection, bronchitis, pneumonia, and strep throat.
How to tell? Go to the clinic if you have sinus pressure or pain, a persistent or worsening sore throat, a deep cough that's making you hack up yellow or green phlegm (all day, not just mornings), fast or difficult breathing, ear pain, or a high fever. If you think you have the flu -- and it's diagnosed quickly enough -- a health care provider can give you an antiviral drug to help ease symptoms faster.
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