1. Department of Environmental Health, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
2. Pathogen Genomics Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
3. Division of General Internal Medicine and Infectious Diseases, Rinku General Medical Center, 2-23 Rinku Ourai-Kita, Izumisano, Osaka 598-8577, Japan
4. Department of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan