PandemicFlu.gov - AvianFlu.gov
 

Font Size Reduce Text Size  Enlarge Text Size     Print Send this page to printer     Download Reader  Download PDF reader

Tim Uyeki
Medical Epidemiologist

Centers for Disease Control and Prevention

…there’s no evidence that these viruses have acquired the ability for sustained human to human transmission.  That means they have not been able to go from person to person to person to person, continuing on in a sustained manner.  There has been transmission from birds to people and, in very rare circumstances, probably limited person to person transmission but then dead-end transmission.  So the virus does not have the ability to go further.  But there is a possibility that this virus could acquire the properties in the future to allow it to spread much more easily among people and then in a sustained manner from person to person.  And that’s what we’re really worried about.