Depending on your major, there are many ways you could look at the topic of pandemics. Government policy, public health, medical research, economic impacts, and more.
Most databases cover peer-reviewed articles, but some also have books and book chapters, reports, dissertations, and more.
Government Publications are a great resource as well, and this guide can help you with that.
If you can't find what you need, be sure to contact the Subject Librarian in your discipline.