1. Authors contributed equally to the work and share first authorship
2. Unit for Laboratory Surveillance of Viral Pathogens and Vaccine Preventable Diseases, Department of Microbiology, the Public Health Agency of Sweden, Solna, Sweden
3. Unit for Vaccination Programmes, Department of Communicable Disease Control and Health Protection, the Public Health Agency of Sweden, Solna, Sweden
4. Clinical Microbiology Laboratory, Lund, Sweden
5. Regional Office of Communicable Disease Control and Prevention, Region Skåne, Malmö, Sweden