Answer:

S

A

L

K

We have spotted SALK (4 Letters) a total of 8 times in our database. Below you may see the clues associated with SALK and also when and where was it last seen:

Referring crossword puzzle clues

• 1950s vaccine pioneer
• Polio vaccine developer
• Vaccine pioneer Jonas

Usage among publishers:

• Wall Street Journal: Nov 2, 2024
• Thomas Joseph: Aug 30, 2024
• Universal: Jun 11, 2024
• Wall Street Journal: Aug 16, 2023
• Wall Street Journal: Mar 1, 2023
• Newsday: Sep 11, 2022
• New York Times: Aug 8, 2022