“Modern vaccine component”

Here is the verified answer to the Wall Street Journal Crossword clue “Modern vaccine component”, last seen on August 18, 2026.

Answer hidden — reveal below

R?A

A 3-letter down entry from the Tuesday puzzle

The Answer

RNA

The answer to “Modern vaccine component” is RNA

Letters3

DirectionDown

PublishedAug 18, 2026

Letter analysis

The clue “Modern vaccine component” appeared in the Wall Street Journal Crossword on Tuesday, August 18, 2026 as a down entry. The verified answer is RNA — a 3-letter word that begins with R and ends with A.

This answer contains 1 vowel and 2 consonants. Click through any related clue below to keep solving, or open the full answer key for the day from the link above.

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Frequently Asked Questions

What is the answer to “Modern vaccine component”?

The answer to the Wall Street Journal Crossword clue “Modern vaccine component” is RNA — a 3-letter down entry from the August 18, 2026 puzzle.

How many letters is the answer?

RNA has 3 letters — 1 vowel and 2 consonants.

Are these answers official?

WSJCrosswordAnswers.org is an independent reference site, not affiliated with the Wall Street Journal. We solve and verify each puzzle by hand before publishing.