Alaska on Thursday logged the highest combined count of active coronavirus infections in residents and nonresident workers and visitors since the pandemic began. Nearly all the new nonresident cases reported Thursday involved seafood industry workers, who are required to get tested under safety plans filed by processing companies. Nine of the new seafood industry cases were in the Bristol Bay region, where workers are arriving for the lucrative salmon season amid local concerns about the spread of the coronavirus given their limited health-care capacity. But local officials say none of the Bristol Bay seafood workers who tested positive were showing any symptoms as of Thursday, so they weren’t stressing the system.