I need to find articles in peer-reviewed journals about immunization.
Go to Databases by Subject (linked below). This LibGuide has all of our databases organized by topic. Depending on the exact topic of your paper, you can choose the Social Sciences, Science or Medical tab. Many of the databases will be present in all three locations.
EBSCO: Academic Search Complete is always a good place to start. Select that link, and search immunization. This brings back many thousands of results, so use the limiters on the left to narrow down the list.
Limit by Full Text, publication date, References Available, Scholarly Journal, and Subject Thesaurus terms. Click to see the Thesaurus terms, then click the Show All option. Put checks next to any of the official subject terms that describe your topic.