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First Case Report of Human Bacteremia With Malacobacter (Arcobacter) mytili.

ABSTRACT: Arcobacter spp. are commonly associated with shellfish and have been increasingly implicated in human gastrointestinal disease. We report the first case of human bacteremia with Malacobacter (previously Arcobacter) mytili acquired after exposure to Maryland crab. Arcobacter spp. should be considered in febrile illnesses when the history indicates exposure to seafood.

SUBMITTER: Vasiljevic M

PROVIDER: S-EPMC6667711 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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First Case Report of Human Bacteremia With Malacobacter (Arcobacter) mytili.

Vasiljevic Marija M Fenwick Alexander J AJ Nematollahi Saman S Gundareddy Venkat P VP Romagnoli Mark M Zenilman Jonathan J Carroll Karen C KC

Open forum infectious diseases 20190701 7

Arcobacter spp. are commonly associated with shellfish and have been increasingly implicated in human gastrointestinal disease. We report the first case of human bacteremia with Malacobacter (previously Arcobacter) mytili acquired after exposure to Maryland crab. Arcobacter spp. should be considered in febrile illnesses when the history indicates exposure to seafood. ...[more]

PMID: 31363766

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Project description:BackgroundThe bacterium Campylobacter insulaenigrae was first isolated from marine mammals of Scotland in 2004. Only one case of C. insulaenigrae infection in humans has been previously reported.Case presentationAn 89-year-old Japanese man without dementia was admitted to our hospital, because he presented with a fever of 38 °C and weakness in right leg since 5 days. He had organized chronic subdural hematoma (CSH), and no history of pre-infection. At the time of admission, he had paralysis of the extraocular muscle, ataxia, and low manual muscle test score of the right side. He was suspected to have Miller Fisher syndrome; however, these symptoms improved without any treatment. On day 22 in the hospital, the patient presented a fever of 38.8 °C, left cranial nerve disorder, and hemiplegia. On day 25, the patient presented with signs of meningeal irritation; cerebrospinal fluid examination indicated an increase in the number of apocytes and a low glucose level. A contrast magnetic resonance imaging (MRI) scan of the patient's head indicated a contrast enhancement effect in his right meninges. The blood culture showed presence of spirillums; 16S rRNA gene sequencing confirmed that the spirillums in the blood culture were Campylobacter insulaenigrae (C. insulaenigrae). We started treatment with meropenem for bacteremia and meningitis. When the symptoms improved, meropenem was replaced with ampicillin, based on the result of the drug sensitivity test. The treatment continued for 4 weeks.ConclusionsWe report the first case of meningitis caused by C. insulaenigrae bacteremia in humans, and the second clinical report of C. insulaenigrae infection in humans. The bacterial strains isolated from humans and marine mammals had different genotypes. This suggests that different genotypes could be responsible for differences in the hosts. Further case studies are needed to establish the reasons behind the difference in the manifestations of C. insulaenigrae infections reported so far.

Dataset Information

First Case Report of Human Bacteremia With Malacobacter (Arcobacter) mytili.

Publications

First Case Report of Human Bacteremia With Malacobacter (Arcobacter) mytili.

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