Health officials warned Friday Oregon’s peak number of hospitalizations since the start of the COVID-19 pandemic, about 1,200, could more than double by the end of February.  Those officials expect omicron to become the dominant variant in the state within a month and possibly trigger a fifth wave of infections.  Governor Kate Brown said the Oregon Health Authority is working to expand booster vaccination, with a goal of administering booster shots to an additional million residents by the end of January, doubling the current number people who have already received the booster.  Oregon Health Sciences University lead data scientist Dr. Peter Graven said modeling does show Omicron with a dramatically lower death rate, but the issue is the number of hospitalizations that are expected.  And that has OHSU Health Chief Medical Officer Dr. Renee Edwards concerned, pointing out they are still seeing a large number of Delta variant patients.  Health officials say the best way to combat the quick spread of the new variant is for people to be fully vaccinated and receive a booster shot.  Brown did not announce any added statewide coronavirus-related restrictions.