Eggs are a major tool in making vaccines that could potentially protect people from a bird flu outbreak — but with the virus leading to the culling of birds, some scientists are worried. CBS News medical contributor Dr. Céline Gounder has more.
Eggs are a major tool in making vaccines that could potentially protect people from a bird flu outbreak — but with the virus leading to the culling of birds, some scientists are worried. CBS News medical contributor Dr. Céline Gounder has more.