Flu season is underway in the Northern Hemisphere, sickening millions of people and in rare cases, causing hospitalization or death. The best prevention is a flu shot, but it’s not unusual for these vaccines to be less effective than intended. Some researchers suspect that the common practice of producing vaccines in chicken eggs could be partially to blame, according to an article in Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society.
Source: Egg-based flu vaccines: Not all they’re cracked up to be?