About the Authors

Johanna F. Lindahl

Affiliation Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Uppsala, Sweden

Karl Ståhl

Current address: Department of Disease Control and Epidemiology, National Veterinary Institute, SVA, Uppsala, Sweden.

Affiliation Department of Biomedicine and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden

Jan Chirico

Affiliation Department of Virology, Immunology and Parasitology, National Veterinary Institute, National Veterinary Institute, SVA, Uppsala, Sweden

Sofia Boqvist

Affiliation Department of Biomedicine and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden

Ho Thi Viet Thu

Affiliation Department of Veterinary Medicine, Can Tho University, Can Tho City, Vietnam

Ulf Magnusson

Ulf.Magnusson@slu.se

Affiliation Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Uppsala, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JFL KS JC HTVT UM. Performed the experiments: JFL HTVT. Analyzed the data: JFL KS. Contributed reagents/materials/analysis tools: KS. Wrote the paper: JFL KS UM SB JC HTVT.