By Gillian FlaccusThe Associated PressPORTLAND, Ore. — Ani Sirois, a respiratory nurse, has spent months caring for coronavirus patients at a Portland, Oregon, hospital, and she’s only getting busier as infections — and hospitalizations — surge before the holidays. But on a recent sunny day, COVID-19 seemed far away as she, her husband and their 2-year-old daughter roamed a Christmas tree farm in search of the perfect evergreen for a holiday season unlike any other.