Lamprini Veneti1, Jacob Dag Berild2, Sara Viksmoen Watle2, Jostein Starrfelt1, Margrethe Greve-Isdahl2, Petter Langlete1, Håkon Bøås2, Karoline Bragstad3, Olav Hungnes3, Hinta Meijerink2
1Department of Infection Control and Preparedness, Norwegian Institute of Public Health, Oslo, Norway
2Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway
3Department of Virology, Norwegian Institute of Public Health, Oslo, Norway