Vaccines
The crossword clue "Vaccines" is answered by SERA, a 4-letter entry. Used 41 times across 20 distinct years; most recently in 2017; first recorded in 1950. It appears in 10 publications in the xd corpus. Every figure on this page comes from the collection data itself.
The answer
SERA
4 letters. See every clue for this answer on the SERA answer page.
Used 41 times across 20 distinct years; most recently in 2017; first recorded in 1950. It appears in 10 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this collection link to their own answer page.
- ANTISERA (1 uses in xd)
Other clues for SERA
Every other clue in this collection answered by SERA, most used first.
- Antitoxins - used 286 times, most recently in 2026
- Blood fluids - used 116 times, most recently in 2026
- "Buona ___" (Italian greeting) - used 52 times, most recently in 2025
- Hospital fluids - used 42 times, most recently in 2026
- "Buona ___" - used 28 times, most recently in 2026
- Hospital supplies - used 28 times, most recently in 2019
- Medicinal fluids - used 28 times, most recently in 2023
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Like some vaccines - ORAL, used 103 times
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