Abstract:
BACKGROUND:In 2007, Park et al. identified a novel serotype among Streptococcus pneumoniae serogroup 6 which they named serotype 6C. The aim of this study was to evaluate with the Neufeld test a novel S. pneumoniae serotype 6C type specific polyclonal antiserum. In addition, serotype 6C isolates found in Denmark in 2007 and 2008 as well as eight old original serotype 6A isolates were characterised. METHODS:In this study, 181 clinical Streptococcus pneumoniae isolates from Denmark 2007 and 2008 were examined; 96 isolates had previously been typed as serotype 6A and 85 as serotype 6B. In addition, eight older isolates from 1952 to 1987, earlier serotyped as 6A, were examined. Serotype 6C isolates were identified by PCR and serotyping with the Neufeld test using the novel type specific polyclonal antiserum, factor antiserum 6 d, in addition to factor antisera 6b, 6b* (absorbed free for cross-reactions to serotype 6C) and 6c. All antisera are commercially available and antiserum 6b obtained from the supplier after 1 January 2009 is antiserum 6b*. All serotype 6C isolates were further characterised using multi-locus sequence typing. RESULTS:When retesting all 96 original serotype 6A isolates by PCR and the Neufeld test, 29.6% (24 of 81) of the invasive isolates in Denmark from 2007 and 2008 were recognised as serotype 6C. In addition, three of eight old isolates originally serotyped as 6A were identified to be serotype 6C. The oldest serotype 6C isolate was from 1962. The serotype 6C isolates belonged to eleven different sequence types (ST) and nine clonal complexes (CC), ST1692 (CC395), ST386 (CC386) and ST481 (CC460) were the predominant types. CONCLUSIONS:We tested a novel polyclonal antiserum 6 d, as well as modified antiserum 6b*, provided a scheme for the serotyping of S. pneumoniae serogroup 6 using the Neufeld test and compared the serotyping method with PCR based methods. The two types of methods provided the same results. In future, it will, therefore, be possible to test also serotype 6C in accordance to the standard method for serotyping of S. pneumoniae recommended by WHO.Among all invasive isolates from Denmark 2007 and 2008, serotype 6C constituted 29.6% of the original serotype 6A isolates. The serotype 6C isolates were found to be diverse belonging to a number of different STs and CCs of which most have been observed in other countries previously. Serotype 6C is regarded as an "old" serotype being present among S. pneumoniae isolates in Denmark for at least 48 years. The genetic diversity of serotype 6C isolates and their genetic relationship to other serotypes suggested that serotype 6C strains may have arisen from several different independent recombination events involving different parental strains such as serotypes 6A, 6B, 23F and 4.
journal_name
BMC Infect Disjournal_title
BMC infectious diseasesauthors
Lambertsen L,Kerrn MBdoi
10.1186/1471-2334-10-282subject
Has Abstractpub_date
2010-09-24 00:00:00pages
282issn
1471-2334pii
1471-2334-10-282journal_volume
10pub_type
杂志文章abstract:BACKGROUND:The preferred regimen for HIV post-exposure prophylaxis (PEP) is based mainly on safety and tolerability because it is given to immunocompetent people without HIV infection for a limited time (28 days). The frequency of adverse events (AEs) may be > 60%. Although AEs are generally not severe, they can lead t...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-016-2056-3
更新日期:2016-11-29 00:00:00
abstract:BACKGROUND:Diagnostic tests are generally used in situations with similar pre-test probability of disease to where they were developed. When these tests are applied in situations with very different pre-test probabilities of disease, it is informative to model the likely implications of known characteristics of test pe...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-10-93
更新日期:2010-04-12 00:00:00
abstract:BACKGROUND:Dengue, a viral disease transmitted by Aedes mosquitoes, is an important public health concern throughout Thailand. Climate variables are potential predictors of dengue transmission. Associations between climate variables and dengue have usually been performed on large-scale first-level national administrati...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-019-4379-3
更新日期:2019-08-23 00:00:00
abstract:BACKGROUND:In spite of an alarmingly high tuberculosis (TB) burden amongst the Saharia tribe of central India, there is hardly any study to investigate the impact of DOTS implementation on the magnitude of tuberculosis disease and the changes over time. This article present the findings of TB prevalence surveys conduct...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-019-3815-8
更新日期:2019-02-20 00:00:00
abstract:BACKGROUND:An ongoing outbreak of coronavirus disease 2019 (COVID-19) is spreading globally. Recently, several articles have mentioned that the early acute respiratory distress syndrome (ARDS) caused by COVID-19 significantly differ from those of ARDS due to other causes. Actually, we newly observed that some mechanica...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-020-05360-5
更新日期:2020-08-27 00:00:00
abstract:BACKGROUND:The incidence of community-associated methicillin-resistant Staphylococcus aureus (MRSA) has risen dramatically in the U.S., particularly among children. Although Streptococcus pneumoniae colonization has been inversely associated with S. aureus colonization in unvaccinated children, this and other risk fact...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-9-110
更新日期:2009-07-11 00:00:00
abstract:BACKGROUND:Intestinal parasitic infections are still one of the major health concerns in developing countries. Monitoring of intestinal parasitic infection and associated risk factors are essential for intervention strategies. Therefore, the aim of this study was to assess the prevalence of intestinal parasitic infecti...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-017-2466-x
更新日期:2017-05-23 00:00:00
abstract:BACKGROUND:The usefulness of sputum Gram stain in patients with community-acquired pneumonia (CAP) is controversial. There has been no study to evaluate the diagnostic value of this method in patients with healthcare-associated pneumonia (HCAP). The purpose of this study was to evaluate the usefulness of sputum Gram st...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-14-534
更新日期:2014-10-18 00:00:00
abstract:BACKGROUND:HIV self-testing (HIVST) can be performed using directly assisted and unassisted approaches in facilities or communities to reach different populations. The aim of this study was to compare the practicability and effectiveness of the two delivery approaches for HIVST, unassisted HIVST (UH) and directly assis...
journal_title:BMC infectious diseases
pub_type: 杂志文章,随机对照试验
doi:10.1186/s12879-020-05554-x
更新日期:2020-11-11 00:00:00
abstract:BACKGROUND:Several symptoms are classically thought to be suggestive of pertussis in children, but the diagnostic value of these symptoms in adolescent and adult patients is unclear. We evaluated the accuracy of the clinical findings for the early presumptive diagnosis of pertussis in adolescent and adult patients. Fur...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-13-129
更新日期:2013-03-11 00:00:00
abstract:BACKGROUND:Because of the high prevalence and absence of cure for infection, chronic hepatitis B virus (HBV) infection has been acknowledged as a pressing public health issue. Toll-like receptors (TLRs) activate the human innate immune system and the polymorphisms in TLRs may alter their function. The present study aim...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-018-2943-x
更新日期:2018-01-10 00:00:00
abstract:BACKGROUND:Lamivudine inhibits replication of both human immunodeficiency virus (HIV) and hepatitis B virus (HBV) and is commonly used as part of antiretroviral therapy. The main limitation in the use of lamivudine is resistant mutation selection. Most of these mutations affect the YMDD motif of the HBV DNA polymerase....
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-4-29
更新日期:2004-08-31 00:00:00
abstract:BACKGROUND:Culturing has long been the gold standard for detecting aetiologic agents in bacterial infections. In some cases, however, culturing fails to detect the infection. To further investigate culture-negative samples, amplification and subsequent sequencing of the 16S rRNA gene is often applied. The aim of the pr...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-017-2333-9
更新日期:2017-03-27 00:00:00
abstract:BACKGROUND:Patients asking for a free anonymous HIV test may have contracted other sexually transmitted infections (STIs) such as Chlamydia trachomatis, yet Chlamydia prevalence in that population is unknown. This study aimed to assess the prevalence and factors associated with Chlamydia infection in patients seeking H...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-016-1915-2
更新日期:2016-10-26 00:00:00
abstract:BACKGROUND:Vitamin D enhances host protective immune responses to Mycobacterium tuberculosis by suppressing Interferon-gamma (IFN-g) and reducing disease associated inflammation in the host. The objectives of this study were to determine whether vitamin D supplementation to patients with tuberculosis (TB) could influen...
journal_title:BMC infectious diseases
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1186/1471-2334-13-22
更新日期:2013-01-19 00:00:00
abstract:BACKGROUND:Tuberculosis (TB) caused by Mycobacterium tuberculosis is one of the leading causes of death from infectious diseases worldwide. Sputum smear microscopy remains the most widely available pulmonary TB diagnostic tool particularly in resource limited settings. A highly sensitive diagnostic with minimal infrast...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-016-2140-8
更新日期:2017-01-17 00:00:00
abstract:BACKGROUND:Pneumocystis jirovecii pneumonia (PJP) can be challenging to diagnose, often requiring bronchoscopy. Since most patients suspected of PJP undergo imaging, we hypothesized that the findings of these studies could help estimate the probability of disease prior to invasive testing. METHODS:We created a cohort ...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-020-05217-x
更新日期:2020-07-10 00:00:00
abstract:BACKGROUND:With ageing of the HIV-infected population, long-term exposure to treatment, varying adherence, emerging resistance and complications to therapies, effectiveness of Highly Active Antiretroviral Therapy (HAART) needs to be monitored continuously at the population level. The German HIV-1 Seroconverter Cohort i...
journal_title:BMC infectious diseases
pub_type: 杂志文章,多中心研究
doi:10.1186/1471-2334-12-94
更新日期:2012-04-19 00:00:00
abstract:BACKGROUND:The new HIV treatment guidelines in China recommend antiretroviral therapy (ART) for all people living with HIV, but significant gaps in implementation still exist. Pre-exposure prophylaxis (PrEP) can effectively reduce the risk of HIV transmission among men who have sex with men (MSM). This study assessed t...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-018-3516-8
更新日期:2018-11-28 00:00:00
abstract:BACKGROUND:The occurrence of antibiotic resistant Neisseria gonorrhoeae isolates is a serious public health problem in different corners of the globe. The objective of this study was to analyze the antimicrobial susceptibility pattern of N. gonorrhoeae in Northwest Ethiopia. METHODS:This was a retrospective study of N...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-13-415
更新日期:2013-09-05 00:00:00
abstract:BACKGROUND:Streptococcus pneumoniae (Pnc), nontypeable Haemophilus influenzae (NTHi) and Moraxella catarrhalis (Mcat) are the most important bacterial pathogens associated with otitis media (OM). Previous studies have suggested that early upper respiratory tract (URT) bacterial carriage may increase risk of subsequent ...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-12-366
更新日期:2012-12-21 00:00:00
abstract:BACKGROUND:A global pandemic mortality study found prominent regional mortality variations in 2009 for Influenza A(H1N1)pdm09. Our study attempts to identify factors that explain why the pandemic mortality burden was high in some countries and low in others. METHODS:As a starting point, we identified possible risk fac...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-017-2730-0
更新日期:2017-09-25 00:00:00
abstract:BACKGROUND:Almost half the world's population is infected with Helicobacter pylori (H. pylori) with the highest reported prevalence from Africa. This infection is associated with several morbid gastrointestinal conditions. Understanding the trends in seroprevalence and the factors associated with H. pylori seropositivi...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-019-3677-0
更新日期:2019-01-08 00:00:00
abstract:BACKGROUND:Malaria remains a major tropical vector-borne disease of immense public health concern owing to its debilitating effects in sub-Saharan Africa. Over the past 30 years, the high altitude areas in Eastern Africa have been reported to experience increased cases of malaria. Governments including that of the Repu...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-020-05158-5
更新日期:2020-06-17 00:00:00
abstract:BACKGROUND:Chronic hepatitis C virus (HCV) infection can progress to cirrhosis and end-stage liver disease in a substantial proportion of patients. The infection is frequently asymptomatic, leaving many infected individuals unaware of the diagnosis until complications occur. This advocates the screening of healthy indi...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-019-3832-7
更新日期:2019-02-26 00:00:00
abstract:BACKGROUND:There are inconsistencies in the literature on reproductive and genital health determinants of human papillomavirus (HPV) infection, the primary cause of cervical cancer. We examined these factors in the Ludwig-McGill Cohort Study, a longitudinal, repeated-measurements investigation on the natural history of...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-016-1446-x
更新日期:2016-03-08 00:00:00
abstract:BACKGROUND:The risk factors, microbial etiology, differentiation, and clinical features of purulent and non-purulent cellulitis are not well defined in Taiwan. METHODS:We conducted a retrospective cohort study of hospitalized adults with cellulitis in Taiwan in 2013. The demographic characteristics, underlying disease...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-015-1064-z
更新日期:2015-08-05 00:00:00
abstract:BACKGROUND:Soft tissue or skin infections due to nontuberculous mycobacteria (NTM) have been reported frequently and are mostly associated with trauma or cosmetic interventions like plastic surgery. However, infection with NTM as a result of a dental procedure have rarely been described and the lack of clinical suspici...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-020-05015-5
更新日期:2020-04-21 00:00:00
abstract:BACKGROUND:The usefulness of procalcitonin (PCT) measurement in critically ill medical patients with suspected nosocomial infection is unclear. The aim of the study was to assess PCT value for the early diagnosis of bacterial nosocomial infection in selected critically ill patients. METHODS:An observational cohort stu...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/1471-2334-9-49
更新日期:2009-04-22 00:00:00
abstract:BACKGROUND:There have been no reports regarding clinical features and molecular characteristics of childhood methicillin-susceptible Staphylococcus aureus (MSSA) infections in Taiwan. METHODS:We prospectively collected clinical S. aureus isolates from patients aged < 18 years in a university-affiliated hospital in 201...
journal_title:BMC infectious diseases
pub_type: 杂志文章
doi:10.1186/s12879-019-4033-0
更新日期:2019-05-10 00:00:00