Teams are encouraged to hold "vaccination days" and educational programs to encourage vaccinations.
The league is working with the NFL Players Association to vaccinate players as well.
The NFL is taking its strongest stance yet when it comes to returning to normal from the pandemic.
The message? Get vaccinated.
In a memo obtained by CNBC, Commissioner Roger Goodell said, "In light of expanded vaccine eligibility, it is appropriate now to take further steps to educate about and promote vaccine availability and acceptance within the NFL."