Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Initial and subsequent search terms.
| Number | Search term |
|---|---|
| #1 | ((COVID-19) OR (SARS-Cov-2) OR (coronavirus)) |
| #2 | (vaccine) OR (vaccination) |
| #3 | ((cancer) OR (priority groups) OR (immunocompromised) OR (high-risk)) |
| #5 | ((#1) AND (#2) AND (#3)) |
| Top-up search | |
| #1 | ((COVID-19) OR (SARS-Cov-2) OR (coronavirus)) |
| #2 | (vaccine) OR (vaccination) |
| #3 | ((cancer) OR (priority groups) OR (immunocompromised) OR (high-risk)) |
| #4 | (hesitancy) OR (attitudes) OR (acceptance) |
| #5 | ((#1) AND (#2) AND (#3) AND (#4)) |
