Introduction: Despite extensive vaccinations, there have been pertussis epidemics in many countries including the Netherlands, the UK, Australia and the USA. During these epidemics Bordetella pertussis strains not producing the vaccine antigen pertactin (Prn) are emerging and increasing in numbers. However, methods for confirming PRN production of B. pertussis isolates are combined PCR or PCR-based sequencing tests and western blotting. Furthermore, data about production of pertussis toxin (PT) and filamentous hemagglutinin (FHA) of these isolates are scarce. Fimbriae (Fim) production is usually determined by agglutination and reported as serotype. In this study we developed an easy, accurate and rapid method for screening PT and FHA production. Methods for Prn and Fim production have been published earlier.
Methods: We analyzed altogether 109 B. pertussis strains, including 103 Finnish B. pertussis strains collected during 2006-2013, international strain Tohama I, French strains FR3496 (PT-negative), FR3693 (Prn-negative) and FR4624 (FHA-negative) and Fim-serotype reference strains S1 (producing only Fim2) and S3 (producing only Fim3). An indirect ELISA with whole bacterial cells as coating antigen was developed and used for rapid screening of the B. pertussis strains. Production of different antigens (PT, FHA, Prn, Fim2 and Fim3) was detected with specific monoclonal antibodies (mAbs).
Results: From the 103 Finnish B. pertussis strains tested, all were positive for PT, FHA and Fim. Four were found negative for Prn, and they were isolated during 2011-2013.
Conclusions: The newly developed method proved to be useful and simple for rapid screening of different antigen production of B. pertussis isolates.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jim.2014.06.001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Genomic epidemiology and evolution of under the vaccination pressure of acellular vaccines in Beijing, China, 2020-2023.
Emerg Microbes Infect
December 2024
Beijing Chaoyang District Center for Disease Control and Prevention, Beijing 100021, China.
Pertussis (or whooping cough) has experienced a global resurgence despite widespread vaccine efforts. In China, the incidence of pertussis has rapidly increased, particularly following the COVID-19 pandemic. Whole-genome sequencing analysis was performed on 60 strains isolated in Beijing from 2020 to 2023, and the sequences were compared with those of 635 strains from China and 943 strains from other countries.
View Article and Find Full Text PDFMolecular characterization and antimicrobial susceptibility for 62 isolates of from children.
Front Microbiol
December 2024
Hebei Key Laboratory of Pathogens and Epidemiology of Infectious Diseases, HeBei Provincial Center for Disease Control and Prevention, Shijiazhuang, China.
Background: Pertussis is a highly contagious respiratory disease caused by (BP). Despite global control of pertussis cases through the Expanded Programme on Immunization (EPI), there has been a significant increase in the incidence of pertussis in recent years, characterized by a "resurgence" in developed countries with high immunization rates as well as a comparable reemergence in certain areas of China. We aim to explore the genotypes and antimicrobial susceptibility of circulating BP from children in Hebei.
View Article and Find Full Text PDFVaccination in adult patients with chronic lung diseases.
Praxis (Bern 1994)
December 2024
Medicine University Affairs, Cantonal Hospital Baselland, Liestal, Switzerland,
In Switzerland, additional vaccinations against influenza, COVID-19, Streptococcus pneumoniae and varicella zoster virus (VZV), are recommended for patients with chronic lung diseases such as COPD, asthma or interstitial lung disease, since infectious diseases often lead to exacerbation of lung diseases resulting in increased disease burden and mortality. In this review we give an overview on recommended vaccinations for patients with chronic lung diseases, also including vaccinations against pertussis and RSV, which are recommended in international guidelines. While continuous development of vaccines against S.
View Article and Find Full Text PDFPertactin deficiency of : Insights into epidemiology, and perspectives on surveillance and public health impact.
Hum Vaccin Immunother
December 2024
GSK, GSK Asia House, Singapore, Singapore.
Pertussis resurgence has been documented even in countries with high pediatric vaccine coverage. The proportion of isolates not expressing pertactin (PRN) has increased in several countries where acellular pertussis (aP) vaccines are used. We systematically reviewed published literature up to July 2023 on PRN-negative isolates in MEDLINE and Embase with no geographical limitations, complemented with a gray literature search.
View Article and Find Full Text PDFInequalities in uptake of childhood vaccination in England, 2019-23: longitudinal study.
BMJ
December 2024
Department of Public Health, Policy and Systems, Institute of Population Health, University of Liverpool, Liverpool, UK.
Objective: To quantify changes in inequalities in uptake of childhood vaccination during a period of steadily declining overall childhood vaccination rates in England.
Design: Longitudinal study.
Setting: General practice data for five vaccines administered to children (first and second doses of the measles, mumps, and rubella vaccine (MMR1 and MMR2, respectively), rotavirus vaccine, pneumococcal conjugate vaccine (PCV) booster, and six-in-one (DTaP/IPV/Hib/HepB) vaccine covering diphtheria, tetanus, pertussis, polio, type b, and hepatitis B) from the Cover of Vaccination Uptake Evaluated Rapidly dataset in England.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!