Ever since the 1940s, vaccine makers have grown large batches of virus inside chicken eggs.

自20世纪40年代以来，疫苗制造商已经在鸡蛋中培养了大量的病毒。

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Ever since the 1940s, vaccine makers have grown large batches of virus inside chicken eggs.

自20世纪40年代以来，疫苗制造商已经在鸡蛋中培养了大量的病毒。

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Can you imagine that drugs come in chicken eggs?

你能想象药物被注射到鸡蛋里吗？

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The traditional way to make flu vaccine is to grow the virus in chicken eggs.

VOA: special.2009.11.11

A DNA-based vaccine wouldn't have to be grown in chicken eggs, doing away with the time-consuming and finicky manufacturing process of the current flu vaccine.

VOA: standard.2010.07.21

Every day we visited the farm animals and searched for eggs in the chicken houses.

VOA: special.2009.11.08

In fact, a single elephant bird egg is about the equivalent of 120 normal chicken eggs.

CNN: Apparently This Matters: Giant elephant bird egg

Researchers at these centers have developed alternatives to chicken eggs and new delivery methods.

CNN: Commentary: Flu shouldn't close Mexico border

The current virus incubation process uses chicken eggs, requiring vaccinemakers to order, up to a year in advance, painstakingly chosen chicken eggs.

FORBES: Broken Eggs