Many publishers and database companies are temporarily expanding access or offering special trial access in light of the COVID-19 epidemic and the move to online instruction across the United States.
For a list of these see: http://guides.newman.baruch.cuny.edu/databases/trials
These nursing organization COVID-19 websites offer an enormous amount of clinical guidance, expert knowledge, and self-care resources for nurses. Even if the organization isn't within your area of specialization you should still have a look as much of what us offered on these is of value to all:
American Association of Critical Care Nurses:
National Student Nurses Association: