Miho Kozuki,Satoshi Tanaka,Tatsuya Shirai et al. Miho Kozuki et al.

Aim: Hepatitis A outbreaks among men who have sex with men (MSM) are a growing global concern. We present a case report of acute hepatitis A in a Japanese MSM who acquired the infection after the conclusion of a recent he...

Kohei Hasegawa,Kenya Murata,Yuki Suzuki et al. Kohei Hasegawa et al.

Background: Stutzerimonas is a recently proposed genus comprising strains formerly classified as Pseudomonas stutzeri. The genus includes at least 16 identified species. Stutzerimonas nitrititolerans, previously known as ...

Kazuya Oshima,Yoshiya Sugano,Akihito Yoshida et al. Kazuya Oshima et al.

Streptococcus dysgalactiae can lead to bacteremia in elderly individuals with underlying conditions, primarily from cellulitis. Although rare, mediastinal abscesses can develop from anatomical anomalies, post-thoracic surgery, esophageal ru...

Kazuhiro Ishikawa,Hideyuki Takahashi,Yukihiro Akeda et al. Kazuhiro Ishikawa et al.

BACKGROUND Meningococcal meningitis is rare in Japan; however, when outbreaks do occur, they predominantly involve domestically infected cases rather than those contracted overseas. CASE REPORT A Japanese man with diabetes in his 50s experi...

Mayuna Kamiga,Shujiro Hayashi,Tetsuharu Ikegami et al. Mayuna Kamiga et al.

Nayuta Seto,Takahiko Fukuchi,Mamiyo Kawakami et al. Nayuta Seto et al.

Seronegative human immunodeficiency virus (HIV) infection, where an HIV-specific antibody response is lacking even in chronic or late-stage HIV infections, is extremely rare. Here, we report the case of a 50-year-old Japanese man presenting...

Miyu Takagi,Takaaki Kobayashi,Akina Fukushima et al. Miyu Takagi et al.

•We experienced a case of necrotizing fasciitis (NF) due to Group A streptococcus in a healthy Japanese man.•Cutaneous manifestations with NF can be initially minimal.•It is important to recognize that one of the characteristic symptoms ...

Kenji Yorita,Chikane Ito,Ai Fujioka et al. Kenji Yorita et al.

Syphilitic infection is usually observed in young patients, and the first stage of the disease (primary syphilis) is characterized by painless cutaneous and lymph node lesions. Herein, we describe a 71-year-old Japanese man with primary syp...

Mioko Matsuo,Kazuki Hashimoto,Rina Jiromaru et al. Mioko Matsuo et al.

Case 2 involved a 71-year-old japanese man who developed a delayed pharyngocutaneous fistula 2 years and 1 month after total pharyngeal laryngectomy for pharyngeal cancer.

Noriyuki Miyaue,Akira Yoshida,Yuki Yamanishi et al. Noriyuki Miyaue et al.

Vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have been developed and administered worldwide. There have been reports of neurological adverse events following immunization (AEFIs). We herein report a case of ...