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meningococcal A vaccine

✓ Approved

China National Pharmaceutical · 疫苗 · 疫苗

什么是 meningococcal A vaccine?

meningococcal A vaccine 是一种疫苗,由China National Pharmaceutical研发。该药已获批,用于治疗相关适应症,给药途径:Injectable (Others)。

药物档案

公司China National Pharmaceutical
药物类别疫苗
给药途径Injectable (Others)
状态Approved

治疗适应症

meningococcal A vaccine 针对 1 个适应症,涉及 1 个治疗领域。

治疗领域疾病/病症分期
Infections and infestationsMeningococcal bacteraemia✓ Approved

相关研究文献

PubMedSAGE open medical case reports2026-09-10

Disseminated meningococcal infection presenting with constrictive pericarditis and bilateral septic arthritis without meningitis: A case report.

Binidris Mutasim M, Shehata Menatalla M, Mahfouz Ahmed A, Abousaad Omar O et al.

Invasive meningococcal disease is a life-threatening infection that classically presents as meningitis or meningococcemia. Extra-meningeal manifestations, including pericarditis and septic arthritis, are uncommon and may complicate diagnosis, particularly in the absence of meningeal involvement. A previously healthy vaccinated man in his 50s presented with acute bilateral knee pain and swelling following a short history of fever, productive cough, fatigue, and dyspnea. Blood cultures grew Neisseria meningitidis serogroup W, whereas cerebrospinal fluid, synovial fluid, and pericardial fluid cultures remained negative. Cardiac magnetic resonance imaging demonstrated constrictive pericarditis with circumferential pericardial enhancement and pericardial effusion. The patient was successfully treated with intravenous ceftriaxone, colchicine, ibuprofen, pericardiocentesis, and bilateral knee washout, followed by oral ciprofloxacin. This case adds to the limited literature describing concurrent cardiac and musculoskeletal manifestations of invasive meningococcal disease without meningitis and shows the importance of early recognition, comprehensive investigation and multidisciplinary management of these uncommon presentations.

PMID 42718941
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PubMedCase reports in infectious diseases2026-09-10

Extreme Hyperleukocytosis in Meningococcal Bacteremia Mimicking Leukemia: A Case Report.

Gorena Camille C, Amir-Kabirian Borna B, Chao Ju-Hsien JH

Hyperleukocytosis (> 100 × 109/L) is typically associated with hematologic malignancies and is rarely reported in infection. A previously healthy 27-year-old man presented with acute gastrointestinal symptoms and was found to have meningococcal bacteremia complicated by thrombocytopenia, coagulopathy, and acute kidney injury. Despite appropriate antimicrobial therapy, his leukocyte count rose progressively, peaking at 173 × 109/L on hospital day four. Bone marrow biopsy and cytogenetic studies excluded leukemia. With continued antibiotic therapy and supportive care, his leukocyte count, coagulopathy, and renal function gradually normalized over the following 10 days. This case highlights hyperleukocytosis as a rare manifestation of meningococcemia and emphasizes the importance of excluding malignancy while managing infection-related complications.

PMID 42719582
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PubMedFrontiers in immunology2026-09-10

A bivalent oral yeast vaccine displaying Nocardia seriolae FHA and LMBV MCP confers protection in largemouth bass (Micropterus salmoides).

Lu Jianfei J, Gu Boge B, Yu Pengzhen P, Chen Jiong J

Largemouth bass ranavirus (LMBV) and Nocardia seriolae are major pathogens affecting largemouth bass (Micropterus salmoides), causing significant economic losses. In this study, recombinant yeasts expressing the fibronectin-binding protein A (FHA) of N. seriolae or the major capsid protein (MCP) of LMBV were constructed using the yeast surface display (YSD) system. Based on these recombinant strains, a bivalent oral yeast-based vaccine was developed and its protective efficacy was systematically evaluated. Oral administration of the vaccine induced specific antibodies against FHA and MCP in serum, as well as increased the transcription levels of adaptive immune genes (IgM, IgT, MHC-II) and innate immune genes (IL-1β, TNF-α, IFN-1, Mx2) in the hindgut, liver, and spleen. Importantly, the bivalent oral vaccine provided significant protection against both pathogens in largemouth bass, with relative percent survival (RPS) values of 56.7% against N. seriolae and 63.3% against LMBV. Meanwhile, the oral vaccine reduced pathogen loads and alleviated histopathological lesions. In summary, these findings suggest that the bivalent oral vaccine developed in this study could serve as a promising strategy for controlling N. seriolae and LMBV infections in largemouth bass aquaculture.

PMID 42718698
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PubMedMicrobiology resource announcements2026-09-10

Genomic characterization of the attenuated human cytomegalovirus strain TR-VAC developed for subviral particle vaccine production.

Schmidt Hanno H, Hewel Charlotte C, Büscher Nicole N, Linke Matthias M et al.

We report the complete genome sequence of the attenuated human cytomegalovirus strain TR-VAC, developed for subviral particle vaccine production. Oxford Nanopore duplex sequencing confirmed all engineered modifications, including UL130 repair, UL25 stop codons, ddFKBP insertion, GFP deletion, and retention of the bacterial artificial chromosome backbone, without large-scale structural rearrangements.

PMID 42720293
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PubMedCureus2026-09-10

Recurrent Mumps in a Fully Vaccinated Young Adult With a Prior Breakthrough Infection: A Case Report.

Ramadugu Rithika R, Pidikiti Chandra Varshini CV, Cordero Peña Alesha A, Almonte Angelis A et al.

Mumps is a vaccine-preventable viral disease that typically presents with parotid gland swelling and constitutional symptoms. Although widespread immunization has substantially reduced disease incidence, outbreaks continue to occur among vaccinated populations, raising concerns regarding waning immunity and vaccine failure. Recurrent mumps following both prior natural infection and complete vaccination is uncommon and remains infrequently reported. We describe a 21-year-old woman who presented with a four-day history of fever, malaise, myalgia, and progressive painful swelling of the left parotid gland associated with difficulty chewing and speaking. She had received two doses of measles-mumps-rubella (MMR) vaccine according to the national immunization schedule and had a documented history of mumps infection at nine years of age, occurring after she had already completed her two-dose MMR series (vaccine-breakthrough infection). Physical examination revealed tender unilateral parotid enlargement, cervical lymphadenopathy, and evidence of undernutrition with a body mass index of 16.7 kg/m². Laboratory evaluation demonstrated iron deficiency anemia. Further evaluation, including positive mumps RT-PCR and positive anti-mumps IgM serology, confirmed acute mumps infection, while investigations excluded alternative causes of parotid enlargement. The patient was managed conservatively with isolation, supportive care, nutritional supplementation, and symptomatic treatment, resulting in complete clinical recovery without complications. This case highlights that recurrent mumps can occur despite prior natural infection and complete MMR vaccination. Although waning immunity and host factors such as undernutrition may have contributed to susceptibility, a causal relationship cannot be established from a single case. Continued surveillance and awareness of breakthrough infections remain important, particularly in resource-limited settings.

PMID 42719503
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PubMedTropical doctor2026-09-10

Vaccine hesitancy in peripheral communities: Combating digital malpractice.

Siddiqui Gulnaz Fatima GF, Siddiqui Shahid Akhtar SA

PMID 42720454
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