Print article The first shipments of the Moderna COVID-19 vaccine the second to receive federal approval arrived in Alaska on Monday as vaccinations that started last week extended into some of the state’s most remote regions. Meanwhile, state and federal officials are trying to figure out why about a third of the half-dozen severe reactions to the vaccine officially reported in the U.S. so far have occurred in Alaska. Officials say reactions have been rare, and far more treatable than the virus can be. The state’s first vaccine arrived a week ago: the start of 35,100 doses manufactured by Pfizer coming to the state in two pulses. As of Sunday, 5,674 doses had been administered, according to the state’s vaccine webpage,