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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ansaldi, Filippo de Florentiis, Daniela Canepa, Paola Ceravolo, Antonella Rappazzo, Emanuela Iudici, Rocco Martini, Mariano Botti, Gerardo Orsi, Andrea Icardi, Giancarlo Durando, Paolo |
| Description | Country affiliation: Italy Author Affiliation: Ansaldi F ( I.R.C.C.S. 'A.O.U. San Martino-IST') |
| Abstract | A serial cross-sectional study of nasopharyngeal carriage among adults aged 60 y or over was conducted in winter-spring 2012 with the aim to describe circulating Streptococcus pneumoniae in an area, Liguria Administrative Region, where the vaccine was implemented for a decade and coverage in pediatric age group reached a value close to 100% for more than 5 y, determining a picture of very high vaccine immunological pressure. The serotype-specific carriage picture in adults was compared with that observed in children by means of a cross-sectional study performed one year before using the same sampling and laboratory methods. Cluster sampling enrolled 283 adults, representative of the open population. Detection of multi-serotype carriage was performed using, real-time PCR and primer specific PCRs. Carriage prevalence of participants with at least one positive sample adjusted for age, i.e., period prevalence, was 18.7%, considering the Ligurian population as standard population, showing that the pneumococcal carriage in the elderly is not a rare event as emerged in other surveys. The long-term use of PCV7 has resulted in strong decrease of vaccine types carriage among adults and children. A multivariate analysis showed that age class and contact with children attending day care covariates were strongly associated with Streptococcus pneumoniae carriage. A strong link between the picture observed in < 5-y-old children and ≥ 60-y-old adults emerged: a strong correlation of specific-serotype prevalence between adults and children and risk factor analysis supported the role played by inter-age-group transmission. |
| File Format | HTM / HTML |
| ISSN | 21645515 |
| e-ISSN | 2164554X |
| Journal | Human Vaccines & Immunotherapeutics |
| Issue Number | 3 |
| Volume Number | 9 |
| Language | English |
| Publisher | Taylor & Francis |
| Publisher Date | 2013-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Immunology Discipline Therapeutics Carrier State Epidemiology Microbiology Pneumococcal Infections Pneumococcal Vaccines Administration & Dosage Streptococcus Pneumoniae Classification Isolation & Purification Child, Preschool Cross-sectional Studies Heptavalent Pneumococcal Conjugate Vaccine Infant Infant, Newborn Immunology Polymerase Chain Reaction Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology Pharmacology |
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