2 Replies ・ Started by iwatejeff at 2021-01-05 00:12:26 UTC ・ Last reply by thadi at 2021-01-15 18:43:42 UTC This is a discussion about ワクチン ワクチン語源 Happy New Year / Happy 丑年 Jisho users. Did you know that while the word ワクチン derives from the German word vakzin. The etymology of the word vaccine is as follows: late 18th century: from Latin vaccinus, from vacca ‘cow’ (because of the early use of the cowpox virus against smallpox).. With 2021 being the year of the cow, it can be said in a roundabout way, that 2021 is also the year of the vaccine. Miwa Admin at 2021-01-13 16:52:19 UTC 👏👏👏 This is super interesting! Happy new year!! Thanks for sharing:) thadi at 2021-01-15 18:43:42 UTC That's really interesting indeed! Thanks for sharing. Log in to reply.