[1]Statens Serum Inst, Dept Infect Dis Epidemiol & Prevent, Copenhagen, Denmark.
[2]Statens Serum Inst, Div Infect Dis Preparedness, Copenhagen, Denmark.
[3]Sjobjornsvagen, Stockholm, Sweden.
[4]Publ Hlth Agcy Sweden, Dept Microbiol, Solna, Sweden.
[5]Zealand Univ Hosp, Reg Dept Clin Microbiol, Koege, Region Zealand, Denmark.
[6]Univ Copenhagen, Dept Publ Hlth, Global Hlth Sect, Copenhagen, Denmark.
[7]South China Agr Univ, Coll Vet Med, Ctr Emerging & Zoonot Dis, Guangdong Lab Lingnan Modern Agr, Guangzhou, Peoples R China.
[8]Statens Serum Inst, Dept Bacteria Parasites & Fungi, Copenhagen, Denmark.