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Haemophilus

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https://www.readbyqxmd.com/read/29325581/haemophilus-is-overrepresented-in-the-nasopharynx-of-infants-hospitalized-with-rsv-infection-and-associated-with-increased-viral-load-and-enhanced-mucosal-cxcl8-responses
#1
Thomas H A Ederveen, Gerben Ferwerda, Inge M Ahout, Marloes Vissers, Ronald de Groot, Jos Boekhorst, Harro M Timmerman, Martijn A Huynen, Sacha A F T van Hijum, Marien I de Jonge
BACKGROUND: While almost all infants are infected with respiratory syncytial virus (RSV) before the age of 2 years, only a small percentage develops severe disease. Previous studies suggest that the nasopharyngeal microbiome affects disease development. We therefore studied the effect of the nasopharyngeal microbiome on viral load and mucosal cytokine responses, two important factors influencing the pathophysiology of RSV disease. To determine the relation between (i) the microbiome of the upper respiratory tract, (ii) viral load, and (iii) host mucosal inflammation during an RSV infection, nasopharyngeal microbiota profiles of RSV infected infants (< 6 months) with different levels of disease severity and age-matched healthy controls were determined by 16S rRNA marker gene sequencing...
January 11, 2018: Microbiome
https://www.readbyqxmd.com/read/29325483/characterization-of-vaccination-policies-for-attendance-and-employment-at-day-summer-camps-in-new-york-state
#2
William A Prescott, Kelsey C Violanti, Nicholas M Fusco
INTRODUCTION: New York state requires day/summer camps to keep immunization records for all enrolled campers and strongly recommends requiring vaccination for all campers and staff. The objective of this study was to characterize immunization requirements/recommendations for children/adolescents enrolled in and staff employed at day/summer camps in New York state. METHODS: An electronic hyperlink to a 9-question survey instrument was distributed via e-mail to 178 day/summer camps located in New York state cities with a population size greater than 100 000 people...
January 1, 2018: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/29318796/recurrent-guillain-barr%C3%A3-syndrome-following-urinary-tract-infection-by-escherichia-coli
#3
Yoon Sik Jo, Jin Yong Choi, Hong Chung, Yuseok Kim, Sang Jun Na
Recurrent Guillain-Barré syndrome (GBS) is a rare, immune-mediated disease of the peripheral nervous system. It has been reported to occur at intervals ranging from four months to 10 years; published case studies suggest that 1%-6% of patients who have had GBS will experience recurrent attacks. The most commonly identified infections coinciding with GBS are Campylobacter jejuni, Haemophilus influenzae, Mycoplasma pneumonia, and cytomegalovirus, while an antecedent infection with Escherichia coli is very uncommon...
January 22, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29316613/limited-interactions-between-streptococcus-suis-and-haemophilus-parasuis-in-in-vitro-co-infection-studies
#4
Annabelle Mathieu-Denoncourt, Corinne Letendre, Jean-Philippe Auger, Mariela Segura, Virginia Aragon, Sonia Lacouture, Marcelo Gottschalk
Streptococcus suis and Haemophilus parasuis are normal inhabitants of the porcine upper respiratory tract but are also among the most frequent causes of disease in weaned piglets worldwide, causing inflammatory diseases such as septicemia, meningitis and pneumonia. Using an in vitro model of infection with tracheal epithelial cells or primary alveolar macrophages (PAMs), it was possible to determine the interaction between S. suis serotype 2 and H. parasuis strains with different level of virulence. Within H...
January 6, 2018: Pathogens
https://www.readbyqxmd.com/read/29315536/a-decision-analytic-model-for-prevention-of-hepatitis-b-virus-infection-in-sub-saharan-africa-using-birth-dose-vaccination
#5
Sarah Anderson, Lorie M Harper, Jodie Dionne-Odom, Gregory Halle-Ekane, Alan T N Tita
OBJECTIVE: To compare prenatal maternal hepatitis B virus (HBV) screening and infant vaccination strategies to inform policy on HBV prevention in Sub-Saharan Africa. METHODS: A decision analytic model was created using previously published data to assess the ability of three intervention strategies to prevent HBV infection by age 10 years. Strategy 1 comprised of universal vaccination with a pentavalent vaccine (HBV, diphtheria, tetanus, pertussis, and Haemophilus influenzae) at age 6 weeks...
January 8, 2018: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29300680/utilization-pattern-of-haemophilus-influenza-type-b-vaccine-in-eight-provinces-of-china
#6
Yan Li, Chenyan Yue, Yamin Wang, Xu Zhu, Kathryn Martin, Robert W Scherpbier, Jiechen Liu, Zhiguo Wang, Yujie Ma, Huijian Cheng, Zhenguo Zhang, Qing Wang, Hui Li, Shen Xie, Qiyou Xiao, Huaqing Wang, Zhijie An
Objective In China, Hib vaccine is a private-sector vaccine that is an option for parents to select to give to their children; it must be paid for out-of-pocket because it is not included in the government's Expanded Program on Immunization (EPI). We evaluated utilization patterns of Hib vaccine to provide evidence in support of development of a national Hib vaccination strategy. Methods We obtained lists of children from immunization information systems (IIS) of counties or districts in 8 provinces of China that had IISs that recorded Hib vaccine administration continuously for the study period...
January 4, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29298732/the-association-between-anterior-nares-and-nasopharyngeal-microbiota-in-infants-hospitalized-for-bronchiolitis
#7
Pamela N Luna, Kohei Hasegawa, Nadim J Ajami, Janice A Espinola, David M Henke, Joseph F Petrosino, Pedro A Piedra, Ashley F Sullivan, Carlos A Camargo, Chad A Shaw, Jonathan M Mansbach
BACKGROUND: The airway microbiome is a subject of great interest for the study of respiratory disease. Anterior nare samples are more accessible than samples from deeper within the nasopharynx. However, the correlation between the microbiota found in the anterior nares and the microbiota found within the nasopharynx is unknown. We assessed the anterior nares and nasopharyngeal microbiota to determine (1) the relation of the microbiota from these two upper airway sites and (2) if associations were maintained between the microbiota from these two sites and two bronchiolitis severity outcomes...
January 3, 2018: Microbiome
https://www.readbyqxmd.com/read/29297428/bacterial-co-infection-and-early-mortality-among-pulmonary-tuberculosis-patients-in-manila-the-philippines
#8
T Shimazaki, T Taniguchi, N R D Saludar, L M Gustilo, T Kato, A Furumoto, K Kato, N Saito, W S Go, E S Tria, E P Salva, E M Dimaano, C Parry, K Ariyoshi, J B Villarama, M Suzuki
OBJECTIVE: To investigate the prevalence of bacterial co-infection and its effect on early mortality among hospitalised human immunodeficiency virus (HIV) negative pulmonary tuberculosis (PTB) patients in Manila, the Philippines. DESIGN: A prospective observational study was conducted at a national infectious disease hospital. HIV-negative PTB patients aged 13 years hospitalised from November to December 2011 and from December 2012 to May 2013 were enrolled. Sputum samples were tested for Mycobacterium tuberculosis and six respiratory bacterial pathogens using polymerase chain reaction (PCR)...
January 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29296080/microbiological-airway-colonization-in-copd-patients-with-severe-emphysema-undergoing-endoscopic-lung-volume-reduction
#9
Franziska C Trudzinski, Frederik Seiler, Heinrike Wilkens, Carlos Metz, Annegret Kamp, Robert Bals, Barbara Gärtner, Philipp M Lepper, Sören L Becker
Background: Endoscopic lung volume reduction (eLVR) is a therapeutic option for selected patients with COPD and severe emphysema. Infectious exacerbations are serious events in these vulnerable patients; hence, prophylactic antibiotics are often prescribed postinterventionally. However, data on the microbiological airway colonization at the time of eLVR are scarce, and there are no evidence-based recommendations regarding a rational antibiotic regimen. Objective: The aim of this study was to perform a clinical and microbiological analysis of COPD patients with advanced emphysema undergoing eLVR with endobronchial valves at a single German University hospital, 2012-2017...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29290527/mutant-selection-window-of-four-quinolone-antibiotics-against-clinical-isolates-of-streptococcus-pneumoniae-haemophilus-influenzae-and-moraxella-catarrhalis
#10
Hajime Nakai, Takumi Sato, Takashi Uno, Emiko Furukawa, Masato Kawamura, Hiroshi Takahashi, Akira Watanabe, Shigeru Fujimura
Community-acquired pneumonia and otitis media are caused by several bacterial species, including Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. For the treatment of these diseases, various quinolones are frequently used. We determined the mutant prevention concentration (MPC) of four quinolones, levofloxacin, sitafloxacin, tosufloxacin, and garenoxacin, using 92 clinical isolates and evaluated each mutant selection window (MSW). Furthermore, the DNA sequence of the quinolone resistance-determining region (QRDR) for the resistant mutant selected based on the MSW was determined...
December 29, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29289561/haemophilus-influenzae-type-b-hib-seroprevalence-and-current-epidemiology-in-england-and-wales
#11
Sarah Collins, David Litt, Rachael Almond, Jamie Findlow, Ezra Linley, Mary Ramsay, Ray Borrow, Shamez Ladhani
Introduction The introduction of the Hib conjugate vaccine in the United Kingdom resulted in a rapid decline in invasive Hib disease across all age groups. However, a resurgence in 2000-2002 prompted the introduction of additional control measures, including a routine 12-month booster in 2006. Here we describe results from a national serosurvey in children eligible for the 12-month booster and recent H. influenzae epidemiology in England and Wales. Methods A national serosurvey was performed to determine the prevalence of anti-polyribosyl-phosphate (anti-PRP) IgG antibodies in 1,000 residual samples from children up to 8 years of age in 2013-14...
December 28, 2017: Journal of Infection
https://www.readbyqxmd.com/read/29288818/re-vaccination-following-autologous-hematopoietic-stem-cell-transplantation-is-safe-and-effective-in-patients-with-multiple-myeloma-receiving-lenalidomide-maintenance
#12
Meighan Palazzo, Gunjan L Shah, Olivia Copelan, Kenneth Seier, Sean M Devlin, Molly Maloy, Sheila Kenny, Hani Hassoun, Neha S Korde, Nikoletta Lendvai, Alexander M Lesokhin, Sham Mailankody, David J Chung, Guenther Koehne, C Ola Landgren, Heather Landau, Sergio A Giralt, Miguel-Angel Perales
Guidelines recommend vaccination starting 12 months after autologous hematopoietic stem cell transplant (aHCT), but there is varying practice for patients on maintenance therapy, with some centers not immunizing at all. Due to decreased vaccine rates among the general population causing loss of herd immunity, we aimed to establish the safety and efficacy of revaccinating multiple myeloma patients on lenalidomide maintenance (LM). Of the 122 patients who were vaccinated after aHCT between 2010-2014 at MSKCC, 91 (75%) were on LM...
December 27, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29287070/a-diagnostic-and-epidemiologic-investigation-of-acute-febrile-illness-afi-in-kilombero-tanzania
#13
Christine Hercik, Leonard Cosmas, Ondari D Mogeni, Newton Wamola, Wanze Kohi, Victor Omballa, Melvin Ochieng, Shirley Lidechi, Juma Bonventure, Caroline Ochieng, Clayton Onyango, Barry S Fields, Sayoki Mfinanga, Joel M Montgomery
INTRODUCTION: In low-resource settings, empiric case management of febrile illness is routine as a result of limited access to laboratory diagnostics. The use of comprehensive fever syndromic surveillance, with enhanced clinical microbiology, advanced diagnostics and more robust epidemiologic investigation, could enable healthcare providers to offer a differential diagnosis of fever syndrome and more appropriate care and treatment. METHODS: We conducted a year-long exploratory study of fever syndrome among patients ≥ 1 year if age, presenting to clinical settings with an axillary temperature of ≥37...
2017: PloS One
https://www.readbyqxmd.com/read/29285648/bacteria-from-bronchoalveolar-lavage-fluid-from-children-with-suspected-chronic-lower-respiratory-tract-infection-results-from-a-multi-center-cross-sectional-study-in-spain
#14
Amparo Escribano Montaner, Juan García de Lomas, José Ramón Villa Asensi, Oscar Asensio de la Cruz, Olga de la Serna Blázquez, Mikel Santiago Burruchaga, Pedro Mondéjar López, Alba Torrent Vernetta, Yang Feng, Melissa K Van Dyke, Janet Reyes, Pilar Garcia-Corbeira, Carla A Talarico
This cross-sectional study assessed the prevalence of bacteria isolated from Spanish children with suspected chronic lower respiratory tract infection (LRTI) for whom bronchoalveolar lavage (BAL) was indicated. BAL fluid (BALF) was collected from 191 children (aged ≥ 6 months to < 6 years, with persistent or recurrent respiratory symptoms, non-responders to usual treatment) and cultured. Nasopharyngeal swabs (NPSs) were also obtained and cultured to assess concordance of BALF and NPS findings in the same patient...
December 29, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29284141/optimization-of-haemophilus-influenzae-adhesin-transmembrane-domain-expression-in-escherichia-coli
#15
Eriko Aoki, Kazuo Fujiwara, Akio Shimizu, Sayaka Takase-Yoden, Masamichi Ikeguchi
To obtain a high yield of the transmembrane domain of Haemophilus influenzae adhesin (HiaTD) in Escherichia coli, we attempted to express the HiaTD with and without a signal sequence using a T7 expression system. The expression level of HiaTD after induction was followed by quantification of the purified HiaTD, flow cytometric analysis of the outer membrane integrated HiaTD, and immunoblotting assay of fractionated cell lysate. In the expression system with a signal sequence, although the amount of cell-surface-expressed HiaTD increased over time, the number of HiaTD-expressing cells decreased, probably because of plasmid instability...
December 25, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/29281698/the-impact-of-persistent-bacterial-bronchitis-on-the-pulmonary-microbiome-of-children
#16
Leah Cuthbertson, Vanessa Craven, Lynne Bingle, William O C M Cookson, Mark L Everard, Miriam F Moffatt
INTRODUCTION: Persistent bacterial bronchitis (PBB) is a leading cause of chronic wet cough in young children. This study aimed to characterise the respiratory bacterial microbiota of healthy children and to assess the impact of the changes associated with the development of PBB. Blind, protected brushings were obtained from 20 healthy controls and 24 children with PBB, with an additional directed sample obtained from PBB patients. DNA was extracted, quantified using a 16S rRNA gene quantitative PCR assay prior to microbial community analysis by 16S rRNA gene sequencing...
2017: PloS One
https://www.readbyqxmd.com/read/29280432/a-combined-syndromic-approach-to-examine-viral-bacterial-and-parasitic-agents-among-febrile-patients-a-pilot-study-in-kilombero-tanzania
#17
Christine Hercik, Leonard Cosmas, Ondari D Mogeni, Newton Wamola, Wanze Kohi, Eric Houpt, Jie Liu, Caroline Ochieng, Clayton Onyango, Barry Fields, Sayoki Mfinanga, Joel M Montgomery
The use of fever syndromic surveillance in sub-Saharan Africa is an effective approach to determine the prevalence of both malarial and nonmalarial infectious agents. We collected both blood and naso/oro-pharyngeal (NP/OP) swabs from consecutive consenting patients ≥ 1 year of age, with an axillary temperature ≥ 37.5°C, and symptom onset of ≤ 5 days. Specimens were analyzed using both acute febrile illness (AFI) and respiratory TaqMan array cards (TAC) for multiagent detection of 56 different bloodstream and respiratory agents...
December 26, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29279451/epidemiology-of-respiratory-pathogens-in-children-with-lower-respiratory-tract-infections-in-shanghai-china-from-2013-to-2015
#18
Pengcheng Liu, Menghua Xu, Leiyan He, Liyun Su, Aimin Wang, Pan Fu, Lijuan Lu, Chuanqing Wang, Jin Xu
This study aimed to explore the epidemiology of pathogens in children who were hospitalized with lower respiratory tract infections (LRTIs) at the Children's Hospital of Fudan University, Shanghai, China. Children aged less than 18 years who were hospitalized with LRTIs were recruited from January 2013 to December 2015. Respiratory specimens were collected for the detection of common respiratory viruses, atypical bacteria and bacteria using current laboratory diagnostic tests. The epidemiological characteristics of the respiratory pathogens were analysed...
December 26, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29278616/decreased-aom-with-treatment-failure-following-introduction-of-the-ten-valent-pneumococcal-haemophilus-influenzae-protein-d-conjugate-vaccine
#19
Elias Eythorsson, Birgir Hrafnkelsson, Helga Erlendsdóttir, Sigmar Atli Gudmundsson, Karl G Kristinsson, Ásgeir Haraldsson
BACKGROUND: Acute otitis media non-responsive to antibiotics is most commonly caused by antibiotic-resistant Streptococcus pneumoniae and Haemophilus influenzae. A strategy for treating these infections with parenteral ceftriaxone was adopted at The Children's Hospital Iceland. The 10-valent pneumococcal H. influenzae Protein D-conjugate vaccine (PHiD-CV10) was introduced into the vaccination program in Iceland in 2011. The aim was to study its effect on the incidence of AOM with treatment failure...
December 22, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29277353/immunologic-non-inferiority-and-safety-of-the-investigational-pneumococcal-non-typeable-haemophilus-influenzae-protein-d-conjugate-vaccine-phid-cv-4-dose-vial-presentation-compared-to-the-licensed-phid-cv-1-dose-vial-presentation-in-infants-a-phase-iii-randomized
#20
Khalequ Zaman, Sheikh Farzana Zaman, Farzana Zaman, Asma Aziz, Sayeed-Bin Faisal, Magali Traskine, Md Ahsan Habib, Javier Ruiz-Guiñazú, Dorota Borys
BACKGROUND: To support vaccination programs in developing countries, a 4-dose vial presentation of pneumococcal non-typeable Haemophilus influenzae protein D-conjugate vaccine (PHiD-CV) was developed. This study assessed immunologic non-inferiority and safety of the investigational PHiD-CV 4-dose versus licensed 1-dose vial presentation in infants. METHODS: In this phase III, mono-center, observer-blind study in Bangladesh, 6-10-week-old infants were randomized 1:1 to receive PHiD-CV primary vaccination (at ages 6, 10, 18 weeks) and a booster dose (at age 9 months) with a 4-dose vial (with preservative, 4DV group) or 1-dose vial (preservative-free, 1DV group)...
December 22, 2017: Vaccine
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