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Revista de la Facultad de Medicina
Print version ISSN 0120-0011
Abstract
VASCO, Gabriela and LUNA, Consuelo. Detection of asymptomatic oropharyngeal carriage of Streptococcus pyogenes using two diagnostic methods. rev.fac.med. [online]. 2017, vol.65, n.4, pp.633-635. ISSN 0120-0011. https://doi.org/10.15446/revfacmed.v65n4.59741.
Introduction:
Streptococcus pyogenes causes suppurative skin, mucosal and systemic infections. Timely detection is important to avoid the development of nonsuppurative complications. In addition, carrier status can be a potential source of autoinoculation or infectious outbreaks.
Objective:
To establish the status as S. pyogenes carriers of medical students using two diagnostic methods.
Materials and methods:
A cross-sectional study was carried out with convenience sampling, in which samples from the oropharynx were analyzed by enzyme Strep-A immunoassay and bacterial culture on sheep blood agar at 5%, plus differential tests to detect the presence of S. pyogenes.
Results:
Out of 77 samples included in the analysis, 3 (3.9%) were positive for the microbiological culture for S. pyogenes and none for the Strep-A method.
Conclusion:
Finding the bacterium S. pyogenes among asymptomatic medical students is a warning sign of a potential infection. The comparison of the diagnostic methods for detection showed that the findings validate the use of the culture over Strep-A, if estimating the presence of carriers of said agent is desired.
Keywords : Streptococcus pyogenes; Pharyngitis; Culture Media (MeSH).