About the Authors

Johan Lindh

johan.lindh@smi.se

Affiliations Swedish Institute for Communicable Disease Control, Solna, Sweden, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden

Måns Magnusson

Affiliation Swedish Institute for Communicable Disease Control, Solna, Sweden

Maria Grünewald

Affiliation Swedish Institute for Communicable Disease Control, Solna, Sweden

Anette Hulth

Affiliation Swedish Institute for Communicable Disease Control, Solna, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JL AH. Performed the experiments: AH MM. Analyzed the data: JL MM MG AH. Wrote the paper: JL MM MG AH. Quality assured the article: JL MG AH.