... a viral vector vaccine produced by inserting a part of the genes of the coronavirus into another harmless virus with genetic engineering technology.
https://www.google.com/url?rct=j&sa=t&url=https://www3.nhk.or.jp/nhkworld/en/news/backstories/1653/&ct=ga&cd=CAIyGjg0YzkwMzEwZTQwYzQxNjA6Y29tOmVuOlVT&usg=AFQjCNE5QxoEtBHllOXwIvUP9PB9suSwtA
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