Mycotic aneurysm of the abdominal aorta caused by Haemophilus influenzae type f

Suarez, Carlos J.; Glover, William A.; Cowan, James; Smith, Arnold L.; Clarridge, Jill E.

doi:10.1099/jmm.0.055228-0

Cited by 6 publications

(4 citation statements)

References 15 publications

(15 reference statements)

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“…Despite our case clearly describes a severe congenital CoA complicated by pulmonary infection, we would like to point out the interesting correlation between Haemophilus influenzae infections and aortic aneurysm or aortitis, which have been reported previously (16,17).…”

Section: Discussionmentioning

confidence: 60%

Case Report: Trans-axillary Artery Access for Rescue Stent Implantation in an Infant With Retrograde Non-passable Aortic Coarctation

et al. 2021

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Primary surgical repair remains the traditional treatment for patients with critical duct-dependent coarctation of the aorta (CoA). Initial surgical repair might not be possible or associated with higher risks if additional comorbidities arise in small infants and neonates. Balloon angioplasty (BA) has been described as a rescue strategy for these children. We describe the feasibility of a palliative BA and rescue stent implantation via an alternative antegrade right-axillary artery approach in an initially inoperable infant with pneumonia and respiratory failure and severe CoA, where the stenosis was not passable by traditional retrograde femoral access. This case adds new aspects to the therapy of critical CoA: Stent implantation provides a bridge to surgery in critically ill infants and does not preclude successful surgical repair. Further, if the classic retrograde approach is not possible, the right axillary artery access should be considered as an alternative to pass the stenosis.

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Section: Discussionmentioning

confidence: 60%

Case Report: Trans-axillary Artery Access for Rescue Stent Implantation in an Infant With Retrograde Non-passable Aortic Coarctation

et al. 2021

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“…Previous reports indicated that comorbid diseases, such as chronic obstructive pulmonary disease, malignancy, and immunosuppression, are risk factors for invasive infections caused by H. influenzae (3). To compare this case with the trend in recent invasive Hif infections, the authors surveyed case reports on PubMed using the search terms "H. influenzae type f" and "adult" and used the results to build a summary table (Table 4) of case report of invasive Hif infections since 2013, when routine immunization against Hib started in Japan (18)(19)(20)(21)(22)(23)(24). In these cases, the median age was 63 years old, with some differences in sex.…”

Section: Discussionmentioning

confidence: 99%

<i>Haemophilus influenzae</i> Non-type b Infection in an Adult Patient with Systemic Lupus Erythematosus

et al. 2020

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A 40-year-old man with systemic lupus erythematosus taking consecutive oral corticosteroids developed a high-grade fever and disorder of consciousness following acute rhinitis. Haemophilus influenzae type f (Hif) was found and isolated from the blood and cerebrospinal fluid by culture, leading to a diagnosis of meningitis. The prevalence of H. influenzae type b (Hib) infections has decreased due to routine immunization. As a result, the prevalence of invasive non-Hib, including Hif infection, is increasing as a common H. influenzae infection in children and adults. Physicians should be aware of non-Hib H. influenzae infection, even though the Hib vaccine is widely used in Japan.

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“…However, epidemiological studies of invasive cases reported between 1989–2010 from North America and Europe indicate that invasive H. influenzae disease is now predominantly caused by NTHi and type f (Hif) [3–6]. Detailed analyses suggest that while NTHi acts as a true opportunist in systemic disease, Hif is also opportunistic (affecting frail individuals with underlying co-morbidities or predisposing conditions such as COPD, alcohol abuse, malignancy and diabetes), but often presents as a severe invasive disease in previously healthy and immunocompetent individuals [3, 7–10]. Importantly, more than half of the cases of invasive Hif infection presented in previously healthy individuals, and more than one third of these patients needed further treatment at intensive care units [3].…”

Section: Introductionmentioning

confidence: 99%

Comparative genomic analysis reveals distinct genotypic features of the emerging pathogen Haemophilus influenzae type f

Resman

Hörhold

et al. 2014

BMC Genomics

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BackgroundThe incidence of invasive disease caused by encapsulated Haemophilus influenzae type f (Hif) has increased in the post-H. influenzae type b (Hib) vaccine era. We previously annotated the first complete Hif genome from a clinical isolate (KR494) that caused septic shock and necrotizing myositis. Here, the full genome of Hif KR494 was compared to sequenced reference strains Hib 10810, capsule type d (Hid) Rd Kw20, and finally nontypeable H. influenzae 3655. The goal was to identify possible genomic characteristics that may shed light upon the pathogenesis of Hif.ResultsThe Hif KR494 genome exhibited large regions of synteny with other H. influenzae, but also distinct genome rearrangements. A predicted Hif core genome of 1390 genes was shared with the reference strains, and 6 unique genomic regions comprising half of the 191 unique coding sequences were revealed. The majority of these regions were inserted genetic fragments, most likely derived from the closely-related Haemophilus spp. including H. aegyptius, H. haemolyticus and H. parainfluenzae. Importantly, the KR494 genome possessed several putative virulence genes that were distinct from non-type f strains. These included the sap2 operon, aef3 fimbriae, and genes for kanamycin nucleotidyltranserase, iron-utilization proteins, and putative YadA-like trimeric autotransporters that may increase the bacterial virulence. Furthermore, Hif KR494 lacked a hisABCDEFGH operon for de novo histidine biosynthesis, hmg locus for lipooligosaccharide biosynthesis and biofilm formation, the Haemophilus antibiotic resistance island and a Haemophilus secondary molybdate transport system. We confirmed the histidine auxotrophy and kanamycin resistance in Hif by functional experiments. Moreover, the pattern of unique or missing genes of Hif KR494 was similar in 20 Hif clinical isolates obtained from different years and geographical areas. A cross-species comparison revealed that the Hif genome shared more characteristics with H. aegyptius than Hid and NTHi.ConclusionsThe genomic comparative analyses facilitated identification of genotypic characteristics that may be related to the specific virulence of Hif. In relation to non-type f H. influenzae strains, the Hif genome contains differences in components involved in metabolism and survival that may contribute to its invasiveness.Electronic supplementary materialThe online version of this article (doi:10.1186/1471-2164-15-38) contains supplementary material, which is available to authorized users.

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Mycotic aneurysm of the abdominal aorta caused by Haemophilus influenzae type f

Cited by 6 publications

References 15 publications

Case Report: Trans-axillary Artery Access for Rescue Stent Implantation in an Infant With Retrograde Non-passable Aortic Coarctation

Case Report: Trans-axillary Artery Access for Rescue Stent Implantation in an Infant With Retrograde Non-passable Aortic Coarctation

<i>Haemophilus influenzae</i> Non-type b Infection in an Adult Patient with Systemic Lupus Erythematosus

Comparative genomic analysis reveals distinct genotypic features of the emerging pathogen Haemophilus influenzae type f

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