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Background: Pasteurella (P.) multocida commonly occurs in the upper respiratory tract of healthy domestic pets, especially cats and dogs. People become infected by biting, scratching or direct contact with the animal's saliva. Inflammation develops in the wound and limits itself to the skin and subcutaneous tissue. P. multocida may cause respiratory tract infections and severe life-threatening complications. The study aimed to identify the lower respiratory infection in humans caused by P. multocida, to determine the potential source of infection and the associated symptoms, comorbidities and applied treatment., Materials and Methods: Between January 2010 and September 2021, 14,258 patients underwent 16,255 routine flexible video bronchoscopy (FVB), and the same number of bronchoalveolar lavage fluid (BALF) samples for microbiological examination were taken., Results: Microbiological examinations of the BALF only allowed the identification of six patients with P. multocida infection. All persons reported multiple scratches or bites and licking or kissing by their pets in the past. Productive cough with expectoration of mucopurulent discharge was the predominant symptom., Conclusions: A lower respiratory infection caused by P. multocida is not common in humans. It should be considered particularly in elderly patients with underlying diseases and exposure to cats and dogs., (Copyright © 2023 Elsevier B.V. All rights reserved.)

BACKGROUND As a common member of the oral bacterial flora of cats and dogs, Pasteurella multocida can cause skin and soft tissue infection in humans after bites, licks, or scratches from animals. Uncommonly, infection due to Pasteurella can cause sepsis in humans. Even more rare is the development of infectious endocarditis from a Pasteurella infection. CASE REPORT A 76-year-old woman presented with malaise and symptoms of fluid overload. Blood cultures were positive for Pasteurella multocida, and an echocardiogram was significant for mitral valve vegetation and severe biatrial enlargement. A diagnosis of Pasteurella endocarditis was made. Surgical intervention was recommended, but owing to the risk involved, the patient elected for conservative management involving long-term treatment with intravenous antibiotics. CONCLUSIONS While exceedingly rare, Pasteurella multocida can cause infectious endocarditis in patients with predisposing factors. This patient had a known history of rheumatic heart disease, which is believed to have caused the significant findings on imaging. To the best of our knowledge, our case is the only one to depict Pasteurella endocarditis in a patient with rheumatic heart disease and severe biatrial enlargement. It is the authors' belief that the rheumatic heart disease and remodeling of the heart increased her susceptibility to severe infection from Pasteurella. The purpose of this case is to describe the pathogenicity of an otherwise low-attack bacterial infection in an elderly patient with underlying structural acquired heart damage.

Human pasteurellosis with a gynecologic tropism is rare. A 54 year-old woman presented with sepsis due to a uterine abscess from pasteurella multocida (PM) secondarily complicated by gluteal abscess. She had a history of adenomyosis and had previously undergone hysteroscopic sterilization with micro-inserts. Treatment consisted in antibiotherapy, laparoscopic hysterectomy with salpingectomy and abscess drainage, which resulted in complete recovery. This is the first case of uterine abscess from PM with a second septic location., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)

A lytic bacteriophage PHB01 specific for Pasteurella multocida type D was isolated from the sewage water collected from a pig farm. This phage had the typical morphology of the family Podoviridae , order Caudovirales , presenting an isometric polyhedral head and a short noncontractile tail. PHB01 was able to infect most of the non-toxigenic P. multocida type D strains tested, but not toxigenic type D strains and those belonging to other capsular types. Phage PHB01, the first lytic phage specific for P. multocida type D sequenced thus far, presents a 37,287-bp double-stranded DNA genome with a 223-bp terminal redundancy. The PHB01 genome showed the highest homology with that of PHB02, a lytic phage specific for P. multocida type A. Phylogenetic analysis showed that PHB01 and PHB02 were composed of a genus that was close to the T7-virus genus. In vivo tests using mouse models showed that the administration of PHB01 was safe to the mice and had a good effect on treating the mice infected with different P. multocida type D strains including virulent strain HN05. These findings suggest that PHB01 has a potential use in therapy against infections caused by P. multocida type D.

Purulent pericarditis is a rare entity, defined as the presence of neutrophilic pericardial effusion which is infected by a bacterial, fungus or parasite agent. The diagnosis can be challenging, especially if patients have taken previous antibiotic therapy; on the other hand the recognition of this pathology is often made late, with the onset of severe symptoms or signs of cardiac tamponade or even only at the autopsy. The authors describe the case of a 82-year-old woman with history of extensive laceration of the right lower limb from a dog bite in July 2016, admitted to the Cardiology Department one month later for Acute Pericarditis. During hospitalization she maintained recurrent fever peaks despite the treatment with non-steroidal anti-inflammatory drugs and colchicine. She collected blood cultures and repeated echocardiogram showed increased pericardial effusion with no signs of hemodynamic compromise. Blood cultures revealed the presence of Pasteurella multocida. Due to clinical suspicion of purulent pericarditis, pericardiocentesis was performed with drainage of liquid compatible with exudate and the patient was presented to the Cardiothoracic Surgery Department for pericardiotomy and adequate drainage of the liquid. Histological examination confirmed the diagnosis of Acute Pericarditis. It should be noted that Pasteurella is a very frequent agent (50-90%) in the gastrointestinal tract and nasopharynx of many domestic animals, namely dogs. The authors emphasize the need to aggressively treat this pathology, since untreated death is inevitable., (Copyright © 2018 Sociedade Portuguesa de Cardiologia. Publicado por Elsevier España, S.L.U. All rights reserved.)

BACKGROUND Pasteurella multocida is a gram negative-penicillin sensitive bacterium and is part of normal respiratory microbiota of animals (e.g., cats and dogs) and some birds. Various infections in humans, such as cellulitis, rarely bacteremia, endocarditis, meningitis, and septic arthritis, are a result of domestic cat or dog bites. These infections are rarely seen in an immunocompetent person, without an associated animal bite. CASE REPORT We present a case of refractory Pasteurella multocida bacteremia without any animal bite in an immunocompetent person. CONCLUSIONS Pasteurella multocida bacteremia has been seen in immunocompromised patients and mostly after a cat or dog bite or scratch but might also happen in immunocompetent humans with only pet licking rather than biting, which might increase hospital and emergency department visits or admissions in the future.

Background: Pasteurella multocida is a well-recognized zoonotic agent following dog or cat bites or scratches. Nevertheless, prosthetic joint infection caused by P. multocida are rarely reported., Method: We report here a series of six cases of prosthetic joint infection caused by P. multocida managed at a referral centre for the treatment of bone and joint infection in southern France. We also reviewed the 26 cases reported in literature., Results: The mean age of our cases was 74 years [±8.2, range 63-85]. In majority of our cases (5 cases) were associated with knee prostheses and one case with a hip prosthesis. Most of cases occurred after cat or dog scratches or licks or contact. Diagnoses of prosthetic joint infection caused by P. multocida were made by positive cultures of surgical biopsies or needle aspiration. Mean time delay between prosthetic joint implantation and infection onset was 7.6 years (±5.12 years, range 2-17). Local inflammation, which occurred in all six cases, was the most frequent clinical symptom, followed by pain in five cases, fever and swollen joints in four cases, and a fistula with purulent discharge inside the wound in two cases. The mean time of antibiotic therapy was 8 months. Surgical treatment with prosthesis removal was performed in three cases. Six of our cases were in remission without apparent relapse at 3 years after end of treatment., Conclusion: Prosthetic joint infections caused by P. multocida usually occur after animal scratches or bites, but can occasionally occur after a short animal lick. These infections are usually resulting from a contiguous infection and localized in the knee. An early antibiotic therapy after surgical debridement could avoid prosthetic withdrawal, notably in elderly patients. Patients with prosthetic joints should be warned that animals are potential sources of serious infection and urgent medical advice should be sought if they are bitten or scratched.

Infection of an aortic endograft is a rare complication following endovascular aneurysm repair. These patients have been treated with explantation of the graft to obtain source control followed by an extra-anatomic bypass to restore circulation. The present case study describes an interesting case of Pasteurella infection involving an aortic endograft managed nonoperatively by percutaneous drainage and graft preservation., (© The Author(s) 2016.)

This report presents a case of progressive septic arthritis and osteomyelitis caused by a rare pathogen, Pasteurella multocida, thought to be provoked by the use of systemic corticosteroids. Despite initial improvement after antibiotics and surgical procedure, the patient returned with new, associated symptoms 1 month later. This concurrent set of circumstances leading to a life-threatening condition has not been reported, to the best of our knowledge. Physicians aware of such a case will be better prepared to diagnose, treat, and educate their patients. Additionally, the diagnostic challenge presented by this case report emphasizes the need for vigilance and thoroughness in obtaining histories from patients presenting with seemingly benign complaints, especially in vulnerable populations, such as infants, pregnant women, and immunocompromised adults.