- CCHF is a dangerous viral disease spread by ticks.
- It can cause sudden fever and internal bleeding.
- Outbreaks happen in parts of the world.
- Scientists tested a new experimental vaccine in mice.
- The vaccine enters cells but cannot make more virus.
- One dose protected animals within only a few days.
- A booster gave stronger and longer protection in mice.
- Scientists still found antibodies in mice after many months.
- Researchers plan large-scale production under strict rules next.
- Human trials will begin only after more tests and approval.
Difficult words
- viral — Related to a virus that makes people sick
- tick — A small blood-sucking animal that bitesticks
- vaccine — A medicine that helps the body fight disease
- dose — A measured amount of a medicine or vaccine
- antibody — A blood protein that fights infectionsantibodies
- outbreak — A sudden start of many disease casesOutbreaks
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Have you ever had a vaccine?
- Do you see ticks where you live?
- Would you wait for approval before trying a new vaccine?
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