What you need to know about vaccinations in St. Louis, Carlton, Douglas, Itasca, Lake counties The Duluth Media Group is publishing information about COVID-19 vaccinations as a public service. This list will be updated daily as needed. Written By: News Tribune | × Editor's note: The News Tribune is no longer updating this story. For updated information on what you need to know about vaccinations in the Northland, visit the Duluth Media Group's vaccine tracker. Common questions When the second dose is needed: Second-dose appointments are scheduled with first appointments. Second Pfizer-BioNTech dose needed 21 days after the first. Second Moderna dose needed 28 days after the first. The Johnson & Johnson vaccine is a one-dose vaccine.