SALEM, Ore. (AP) — Oregon Gov. Kate Brown, saying rising COVID-19 hospitalizations threaten to overwhelm doctors, moved 15 counties into the extreme risk category Tuesday, which imposes restrictions including banning indoor restaurant dining. Some of the state’s biggest cities, including Portland, Salem, Bend and Eugene, are in the counties that will be in the most dire category, effective Friday. Brown said if the state doesn’t act now, doctors, nurses, hospitals and other health care providers in Oregon will be stretched to their limits treating severe cases of COVID-19. The move comes as the supply of vaccines is exceeding demand.