1 Japanese Red Cross Narita Hospital, Department of Infectious Diseases, Narita, Chiba, Japan; Kameda Medical Center, Department of Infectious Diseases, Kamogawa, Chiba, Japan. Electronic address: hase.ryota@kameda.jp.
2 Japanese Red Cross Narita Hospital, Department of Infectious Diseases, Narita, Chiba, Japan.
3 National Institute of Infectious Diseases, Department of Parasitology, Tokyo, Japan.
4 Japanese Red Cross Narita Hospital, Department of Laboratory Medicine, Narita, Chiba, Japan.