మూస:PD-USGov-HHS-CDC
 | This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services. As a work of the U.S. federal government, the image is in the public domain. |  |
| This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services. As a work of the U.S. federal government, the image is in the public domain. | |