Quarantine Action

By Bluehawks206, in Runebound

"A hero may spend 1 action to quarantine a hex with an active plague and flip it back to its dormant side."

For the Red Death Scenario it doesn't technically mention the hero must be in the hex to quarantine it and I would assume you have to be next to it or on it to quarantine it. A hero could quarantine from anywhere the way they describe it which is not how they would want it to be understood I assume.

Do you think you have to be next to it or on it to quarantine the plague?