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Impact of Haemophilus influenzae type b conjugate vaccination on hospitalization for invasive disease in children fifteen years after its introduction in Italy. Vaccine 2017; 35:6297-6301. [DOI: 10.1016/j.vaccine.2017.09.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 09/20/2017] [Accepted: 09/25/2017] [Indexed: 11/22/2022]
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First Whole-Genome Sequence of a Haemophilus influenzae Type e Strain Isolated from a Patient with Invasive Disease in Italy. GENOME ANNOUNCEMENTS 2017; 5:5/13/e00059-17. [PMID: 28360180 PMCID: PMC5374224 DOI: 10.1128/genomea.00059-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the present era of conjugate vaccines against Haemophilus influenzae type b, non-vaccine-preventable strains are of concern. Here, we report the first whole-genome sequence of an invasive H. influenzae type e strain. This genomic information will enable further investigations on encapsulated non-type b H. influenzae strains.
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Kosikowska U, Korona-Głowniak I, Niedzielski A, Malm A. Nasopharyngeal and Adenoid Colonization by Haemophilus influenzae and Haemophilus parainfluenzae in Children Undergoing Adenoidectomy and the Ability of Bacterial Isolates to Biofilm Production. Medicine (Baltimore) 2015; 94:e799. [PMID: 25950686 PMCID: PMC4602522 DOI: 10.1097/md.0000000000000799] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Haemophili are pathogenic or opportunistic bacteria often colonizing the upper respiratory tract mucosa. The prevalence of Haemophilus influenzae (with serotypes distribution), and H. parainfluenzae in the nasopharynx and/or the adenoid core in children with recurrent pharyngotonsillitis undergoing adenoidectomy was assessed. Haemophili isolates were investigated for their ability to biofilm production.Nasopharyngeal swabs and the adenoid core were collected from 164 children who underwent adenoidectomy (2-5 years old). Bacteria were identified by the standard methods. Serotyping of H. influenzae was performed using polyclonal and monoclonal antisera. Biofilm formation was detected spectrophotometrically using 96-well microplates and 0.1% crystal violet.Ninety seven percent (159/164) children who underwent adenoidectomy were colonized by Haemophilus spp. The adenoid core was colonized in 99.4% (158/159) children, whereas the nasopharynx in 47.2% (75/159) children (P < 0.0001). In 32% (51/159) children only encapsulated (typeable) isolates of H. influenzae were identified, in 22.6% (36/159) children only (nonencapsulated) H. influenzae NTHi (nonencapsulated) isolates were present, whereas 7.5% (12/159) children were colonized by both types. 14.5% (23/159) children were colonized by untypeable (rough) H. influenzae. In 22% (35/159) children H. influenzae serotype d was isolated. Totally, 192 isolates of H. influenzae, 96 isolates of H. parainfluenzae and 14 isolates of other Haemophilus spp. were selected. In 20.1% (32/159) children 2 or 3 phenotypically different isolates of the same species (H. influenzae or H. parainfluenzae) or serotypes (H. influenzae) were identified in 1 child. 67.2% (129/192) isolates of H. influenzae, 56.3% (54/96) isolates of H. parainfluenzae and 85.7% (12/14) isolates of other Haemophilus spp. were positive for biofilm production. Statistically significant differences (P = 0.0029) among H. parainfluenzae biofilm producers and nonproducers in the adenoid core and the nasopharynx were detected.H. influenzae and H. parainfluenzae carriage rate was comparatively higher in the adenoid core than that in the nasopharynx in children undergoing adenoidectomy, suggesting that their involvement in chronic adenoiditis. The growth in the biofilm seems to be an important feature of haemophili colonizing the upper respiratory tract responsible for their persistence.
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Affiliation(s)
- Urszula Kosikowska
- From the Department of Pharmaceutical Microbiology With Laboratory for Microbiological Diagnostics, Medical University of Lublin (UK, IK-G, AM); Otoneurology Laboratory of III Chair of Pediatrics, Medical University of Lublin (AN), Lublin, Poland
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Invasive disease due to Haemophilus influenzae serotype b ten years after routine vaccination, South Africa, 2003–2009. Vaccine 2012; 30:565-71. [DOI: 10.1016/j.vaccine.2011.11.066] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Revised: 11/11/2011] [Accepted: 11/16/2011] [Indexed: 11/17/2022]
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Cardines R, Giufrè M, Pompilio A, Fiscarelli E, Ricciotti G, Bonaventura GD, Cerquetti M. Haemophilus influenzae in children with cystic fibrosis: Antimicrobial susceptibility, molecular epidemiology, distribution of adhesins and biofilm formation. Int J Med Microbiol 2012; 302:45-52. [DOI: 10.1016/j.ijmm.2011.08.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 07/26/2011] [Accepted: 08/29/2011] [Indexed: 12/22/2022] Open
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Ten years of Hib vaccination in Italy: Prevalence of non-encapsulated Haemophilus influenzae among invasive isolates and the possible impact on antibiotic resistance. Vaccine 2011; 29:3857-62. [DOI: 10.1016/j.vaccine.2011.03.059] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 03/07/2011] [Accepted: 03/17/2011] [Indexed: 11/29/2022]
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Calado R, Betencourt C, Gonçalves H, Cristino N, Calhau P, Lavado PB. Complicated Meningitis caused by a rare serotype of Haemophilus influenzae in Portugal. Diagn Microbiol Infect Dis 2011; 69:111-3. [DOI: 10.1016/j.diagmicrobio.2010.08.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Revised: 08/24/2010] [Accepted: 08/29/2010] [Indexed: 10/18/2022]
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Lima JBT, Ribeiro GS, Cordeiro SM, Gouveia EL, Salgado K, Spratt BG, Godoy D, Reis MG, Ko AI, Reis JN. Poor clinical outcome for meningitis caused by Haemophilus influenzae serotype A strains containing the IS1016-bexA deletion. J Infect Dis 2010; 202:1577-84. [PMID: 20932170 DOI: 10.1086/656778] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Since the introduction of Haemophilus influenzae type b (Hib) conjugate vaccines, meningitis caused by serotypes other than Hib has gained in importance. We conducted active hospital-based surveillance for meningitis over an 11-year period in Salvador, Brazil. H. influenzae isolates were serotyped and analyzed by polymerase chain reaction, pulsed-field gel electrophoresis, and DNA sequencing to identify strains with a specific deletion (IS1016) in the bexA gene (IS1016-bexA). We identified 43 meningitis cases caused by non-type b H. influenzae: 28 (65%) were caused by type a (Hia), 9 (21%) were caused by noncapsulated strains, and 3 (7%) each were caused by types e and f. Hia isolates clustered in 2 clonal groups; clonal group A strains (n = 9) had the IS1016-bexA deletion. Among children <5 years of age, meningitis caused by Hia from clonal group A had higher case-fatality than meningitis caused by clonal group B. Despite small numbers, these results indicate that the presence of the IS1016-bexA deletion is associated with enhanced virulence in non-type b H. influenzae.
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Affiliation(s)
- Josilene B T Lima
- Gonçalo Moniz Research Center, Oswaldo Cruz Foundation, Brazilian Ministry of Health, Salvador, Brazil
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Necrotizing fasciitis caused by Haemophilus influenzae type E in a 17-year-old girl with systemic lupus erythematosus. J Clin Rheumatol 2010; 16:49-50. [PMID: 20051761 DOI: 10.1097/rhu.0b013e3181c7e095] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Characterisation of invasive Haemophilus influenzae isolates in Slovenia, 1993–2008. Eur J Clin Microbiol Infect Dis 2010; 29:661-8. [DOI: 10.1007/s10096-010-0910-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Accepted: 03/08/2010] [Indexed: 10/19/2022]
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Genetic characterization of the capsulation locus of Haemophilus influenzae serotype e. J Clin Microbiol 2010; 48:1404-7. [PMID: 20107095 DOI: 10.1128/jcm.01721-09] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The capsulation (cap) locus of Haemophilus influenzae type e (Hie) was characterized and sequenced. No IS1016 element was found to flank the locus. The 18.2-kb locus included 14 open reading frames (ORFs), which were grouped into three functional regions. Eight new ORFs (named ecs1 to ecs8) were identified in the Hie capsule-specific region II.
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Haemophilus influenzae Serotype f Septic Arthritis, Meningitis, and Bacteremia in a Healthy Adult. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2008. [DOI: 10.1097/ipc.0b013e318162a96e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cardines R, Giufrè M, Mastrantonio P, Ciofi degli Atti ML, Cerquetti M. Nontypeable Haemophilus influenzae meningitis in children: phenotypic and genotypic characterization of isolates. Pediatr Infect Dis J 2007; 26:577-82. [PMID: 17596797 DOI: 10.1097/inf.0b013e3180616715] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND With the decline in the incidence of invasive Haemophilus influenzae type b disease as result of routine immunization of infants, the potential emergence of nontypeable H. influenzae (NTHi) strains as important pathogens has been suggested. METHODS From June 1997 to July 2006, 9 cases of NTHi meningitis in children aged < or =60 months were detected. The 9 NTHi isolates were characterized. Antimicrobial susceptibility patterns were determined by E-test. The transpeptidase domain of penicillin binding protein 3 of a beta-lactamase negative ampicillin-resistant strain was sequenced. Genetic relatedness among isolates was assessed by pulsed field gel electrophoresis and by multilocus sequence typing. The presence of HMW and Hia adhesins and hemagglutinating fimbriae was investigated by PCR and Western Blotting. RESULTS The 9 cases of NTHi meningitis did not occur in specific risk groups, except for one patient. Of the 9 NTHi isolates, 2 were beta-lactamase producers and 1 showed the beta-lactamase negative ampicillin-resistant phenotype. Sequencing of the penicillin binding protein 3 revealed novel amino acid substitutions. A high degree of genetic diversity among isolates was demonstrated by pulsed field gel electrophoresis. Multilocus sequence genotyping confirmed that the 9 NTHi isolates did not belong to related phylogenetic clusters. HMW adhesins were found in 2 isolates, and 5 strains possessed Hia. No hemagglutinating fimbriae were detected, even though 2 isolates contained hifA gene sequences. CONCLUSION NTHi isolates from cases of meningitis in children are genetically diverse. Distribution of adhesins among the isolates we examined is unusual: most strains express Hia that generally occurs in a minority of strains in NTHi, suggesting that this adhesin may play a role in virulence mechanisms of NTHi causing meningitis.
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Affiliation(s)
- Rita Cardines
- Department of Infectious, Parasitic and Immune-mediated Diseases, Istituto Superiore di Sanità, Rome, Italy
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Abstract
Haemophilus influenzae type b causes more than 95% of serious H. influenzae meningitis. H. influenzae type e (Hie) has been implicated in a few cases of meningitis. Here, we present an adult Saudi patient with Hie meningitis and review the literature. The patient, a 19-year-old Saudi male with no significant past medical history, was noted by his family to have some changes in his mentation, confusion and refusal to eat; subsequently, he became unresponsive. Cerebrospinal fluid and blood culture grew Hie. The patient was treated with intravenous ceftriaxone with full recovery.
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Affiliation(s)
- Jaffar A Al-Tawfiq
- Internal Medicine Services Division, Dhahran Health Center, Saudi Aramco Medical Services Organization, Saudi Aramco, Dhahran, Saudi Arabia.
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Cerquetti M, Cardines R, Giufrè M, Sofia T, D'Ambrosio F, Mastrantonio P, Ciofi degli Atti ML. Genetic Diversity of Invasive Strains ofHaemophilus influenzaeType b before and after Introduction of the Conjugate Vaccine in Italy. Clin Infect Dis 2006; 43:317-9. [PMID: 16804847 DOI: 10.1086/505499] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2006] [Accepted: 04/12/2006] [Indexed: 11/03/2022] Open
Abstract
We determined the genotypes of 95 invasive Haemophilus influenzae type b (Hib) strains collected before and after introduction of widespread Hib vaccination in Italy. No substantial change in genetic diversity was highlighted by pulsed-field gel electrophoresis. However, an upward temporal trend in proportion of strains possessing multiple copies of the capsulation b locus was detected (P = .03).
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Affiliation(s)
- Marina Cerquetti
- Department of Infectious, Parasitic and Immune-mediated Diseases, Istituto Superiore di Sanità, Rome, Italy.
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Skoczynska A, Lewandowska M, Klarowicz A, Hryniewicz W. Prevalence and serotype distribution of encapsulated Haemophilus influenzae isolates from patients with lower respiratory tract infections in Poland. J Clin Microbiol 2005; 43:938-41. [PMID: 15695712 PMCID: PMC548084 DOI: 10.1128/jcm.43.2.938-941.2005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Among 1,272 H. influenzae isolates obtained from patients with lower respiratory tract infections, 5.6% were found to be encapsulated. The most common were serotypes b (40.3%) and e (38.9%) followed by serotypes f (16.7%) and d (4.1%). All encapsulated isolates within a particular serotype showed high genetic homogeneity and did not produce beta-lactamases.
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Affiliation(s)
- Anna Skoczynska
- Department of Epidemiology and Clinical Microbiology, National Institute of Public Health, Chełmska 30/34, 00-725 Warsaw, Poland.
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Bajanca P, Teixeira F, Caniça M. Nosocomial cross-infection of a child with cystic fibrosis with Haemophilus influenzae serotype e. J Hosp Infect 2005; 60:185-6. [PMID: 15866021 DOI: 10.1016/j.jhin.2004.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ecker DJ, Sampath R, Willett P, Wyatt JR, Samant V, Massire C, Hall TA, Hari K, McNeil JA, Büchen-Osmond C, Budowle B. The Microbial Rosetta Stone Database: a compilation of global and emerging infectious microorganisms and bioterrorist threat agents. BMC Microbiol 2005; 5:19. [PMID: 15850481 PMCID: PMC1127111 DOI: 10.1186/1471-2180-5-19] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2004] [Accepted: 04/25/2005] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Thousands of different microorganisms affect the health, safety, and economic stability of populations. Many different medical and governmental organizations have created lists of the pathogenic microorganisms relevant to their missions; however, the nomenclature for biological agents on these lists and pathogens described in the literature is inexact. This ambiguity can be a significant block to effective communication among the diverse communities that must deal with epidemics or bioterrorist attacks. RESULTS We have developed a database known as the Microbial Rosetta Stone. The database relates microorganism names, taxonomic classifications, diseases, specific detection and treatment protocols, and relevant literature. The database structure facilitates linkage to public genomic databases. This paper focuses on the information in the database for pathogens that impact global public health, emerging infectious organisms, and bioterrorist threat agents. CONCLUSION The Microbial Rosetta Stone is available at http://www.microbialrosettastone.com/. The database provides public access to up-to-date taxonomic classifications of organisms that cause human diseases, improves the consistency of nomenclature in disease reporting, and provides useful links between different public genomic and public health databases.
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Affiliation(s)
- David J Ecker
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - Rangarajan Sampath
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - Paul Willett
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | | | - Vivek Samant
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - Christian Massire
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - Thomas A Hall
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - Kumar Hari
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - John A McNeil
- Ibis Therapeutics, a division of Isis Pharmaceuticals, 1891 Rutherford Rd., Carlsbad, CA 92008, USA
| | - Cornelia Büchen-Osmond
- International Committee on Taxonomy of Viruses, Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, New York, NY 10032, USA
| | - Bruce Budowle
- Laboratory Division, Federal Bureau of Investigation, Washington, DC 20535, USA
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Cerquetti M, Ciofi degli Atti ML, Cardines R, Giufre M, Romano A, Mastrantonio P. Haemophilus influenzae serotype e meningitis in an infant. Clin Infect Dis 2004; 38:1041. [PMID: 15034842 DOI: 10.1086/382083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Campos J, Román F, Pérez-Vázquez M, Oteo J, Aracil B, Cercenado E. Infections due to Haemophilus influenzae serotype E: microbiological, clinical, and epidemiological features. Clin Infect Dis 2003; 37:841-5. [PMID: 12955648 DOI: 10.1086/377232] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2003] [Accepted: 05/06/2003] [Indexed: 11/03/2022] Open
Abstract
Surveillance after introduction of Haemophilus influenzae serotype b vaccination in Spain identified 26 H. influenzae serotype e (HiE) isolates. Of these, 16 (61.5%) were recovered from patients aged >16 years and 10 (38.5%) from children <16 years of age. HiE caused respiratory infections in 14 patients (9 with pneumonia), conjunctivitis in 4, vaginitis in 2, abscess in 2, and cellulitis, peritoneal infection, sepsis and meningitis in 1 patient each. HiE was strongly clonal and highly resistant to ampicillin and cotrimoxazole, and the incidence of HiE infection did not increase over time.
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Affiliation(s)
- José Campos
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Ministry of Health, Majadahonda, Madrid, Spain.
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