Final answer:
Oregon has historically had non-restrictive vaccine exemption policies, but the state has been working to make non-medical exemptions more difficult to obtain.
Step-by-step explanation:
To determine where Oregon falls in terms of difficulty to obtain a vaccine exemption, it's important to look at the state's laws and regulations regarding vaccinations. While the interactive map provided focuses on outbreaks of vaccine-preventable diseases and may not directly illustrate the vaccine exemption policies, in general, states vary in their requirements for exemptions, which can be medical, religious, or philosophical in nature. Oregon has had historically non-restrictive policies, but they have been working on tightening the laws to make it more difficult to obtain non-medical exemptions in response to public health concerns. The exact position of Oregon on the spectrum of difficulty can shift over time as policies change. For the most updated status of vaccine exemption difficulty in Oregon, one would need to consult the latest legal requirements as outlined by the state's health department or legislation.