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Story summary
- WHO chief Tedros Adhanom Ghebreyesus administered the first Ebola vaccine dose in Bunia on Oct 23.
- The Tumaini trial employs ring vaccination to evaluate safety and efficacy of multiple Ebola vaccines.
- The study will include pregnant women and children aged 12 years and older.
- As of Oct 20, the outbreak recorded 9,704 cases and 4,687 deaths, prompting a WHO emergency on May 17.
