A few common cold or flu photos I found:
Image by markhillary
Swine flu warning in the Metro today
Getting my flu shot on
Image by tyfn
My specialist recommended I get a flu shot since I have a reduced immune system due to my cancer.
(CC) Phillip Jeffrey. www.fadetoplay.com. Feel free to use this photo. I request that you link back to the original picture on Flickr and credit as shown above.