What is the answer to the USA Today Crossword clue "Polio vaccine developer" from June 20, 2026?

Crossword clue

“Polio vaccine developer”

This clue appeared as 34-Down in the USA Today Crossword on Saturday, June 20, 2026. The answer has 4 letters.

Answer · 4 lettersFirst appearance

SALK

Letters4

Starts withS

Ends withK

Vowels1

Where this clue has appeared

USA Today Crossword
Jun 20, 20264 letters→

About this clue

The clue “Polio vaccine developer” ran in the USA Today Crossword on June 20, 2026 as 34-Down. Its answer is a 4-letter word that starts with S and ends with K.

See every answer from the puzzle on the USA Today Crossword page for June 20, 2026, or learn how clues like this work in our guide to crossword clue types.

More clues from this puzzle

1ACOVID protection gear4 letters 5APet collar attachment5 letters 10AReddit or Instacart3 letters 13AObserved4 letters 14A"Hello," in Mandarin5 letters 15AKing Kong and Donkey Kong, e.g.4 letters 16AContent highlighted on Spotify's or Netflix's homepage10 letters 18A___ and needles4 letters

FAQ

What is the answer to the “Polio vaccine developer” clue?+

The answer is SALK (4 letters), from the USA Today Crossword of June 20, 2026.

Where has this clue appeared?+

We have seen it 1 time in the USA Today Crossword.

How do I find other USA Today Crossword answers?+

Open the full list of answers for June 20, 2026, or browse every date on the USA Today Crossword hub.