- A bird flu virus is spreading on farms.
- It has reached dairy cows and other animals.
- Scientists studied milk glands from many mammals.
- They found a sugar on cells for viruses.
- The sugar helps the virus attach and enter.
- Sick cows can shed virus into raw milk.
- Pasteurization kills the virus in store milk.
- More testing of animals is needed now.
- If we do not look, we do not know.
- This can help stop dangerous virus changes.
Difficult words
- virus — A tiny germ that can cause diseaseviruses
- pasteurization — A milk heating process that kills germs
- gland — A body part that makes and releases liquidmilk glands
- attach — To fasten or join to something else
- shed — To let something leave the body or place
- test — To check something to find a problemtesting
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