Group A streptococcal infections: trend and strain emm typing in an area of central Italy, 1985-2002
| Autor: | L. Stolzuoli, Maria Antonietta Mencarelli, Carla Cellesi, M. G. Padula, R. Corbisiero, I. Galgani |
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| Rok vydání: | 2005 |
| Předmět: |
Antigens
Bacterial biology Virulence Epidemiology Streptococcus pyogenes Strain (biology) Genetic Variation Streptococcaceae biology.organism_classification Group A Microbiology Bacterial Typing Techniques Infectious Diseases Italy Emm type Streptococcal Infections Streptococcal toxic shock syndrome Typing Carrier Proteins STREPTOCOCCAL INFECTIONS Genotyping Bacterial Outer Membrane Proteins Research Article |
| Zdroj: | Epidemiology and infection. 133(6) |
| ISSN: | 0950-2688 1985-2002 |
| Popis: | A retrospective study of group A streptococcal (GAS) infections was performed for the period 1985-2002 in an area of central Italy. Although very severe diseases such as streptococcal toxic shock syndrome (STSS) were observed, a general increase in invasive infections was not found. Isolates of GAS were classified by M protein genotyping (emm typing) and analysed according to their origin from invasive and non-invasive infections. The predominant emm types were types 1, 4 and 12, followed by types 3, 6 and 28. During the study period the proportion of isolates of types 1 and 12 fell, while other types (3, 6, 22, 28 and 77) appeared. Isolates from invasive and non-invasive infections shared several emm types; however, most invasive strains belonged to five types only (types 1, 4, 12, 28 and 77), while non-invasive isolates were generally more heterogeneous. |
| Databáze: | OpenAIRE |
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