| |
|
|
|
ContraCostaTimes.com |
Tue, 29 Nov 2005 03:01:00 PST |
|
|
Bird vaccines can halt virus spread, study says |
|
Vaccines can keep chickens from dying of bird flu, but can immunized birds still silently spread infection? It's an important question, as China and Vietnam vaccinate millions of chickens in an effort to stamp out a worrisome strain of bird flu called H5N1. |
|
[ read complete story ]
|
|
|
|
|
