Prevalence and Susceptibility Pattern of Streptococcus suis at Maharat Nakhon Ratchasima Hospital

Nittaya Singpoltan

Abstract


Streptococcus suis  infection   is a  cause  of  meningitis,  septicemia  and  hearing   loss. Infected  patients  need to be treated  as fast as possible  to decrease  the mortality  rate,  Previous report has shown  a  high  prevalence  of  Streptococcus suis  infection  in  northern  Thailand. The incidence  of this infection  has been increasing in all regions  of Thailand. This article  aimed to study the prevalence and susceptibility pattern  of Streptococcus suis at Maharat  Nakhon Ratchasima Hospital.  The retrospective descriptive  study  using a five year-data (January 2012

- December  2016)  collected  from  Microbiology Laboratory  was conducted. The  number  of

 

Streptococcus suis strains  reported during  the year 2012  to 2016 were  36 strains  (0.60%), 26 strains  (0.34%), 45 strains  (0.63%), 60 strains  (0.75%), and  73 strains  (0.76%), respectively. Mostly,  the strains  of  Streptococcus suis  were  isolated  from  blood  (75%)  and  cerebrospinal fluid samples.  Only four  strains  had been isolated  from  other  secretory samples. The majority of Streptococcus suis infection was in male individuals (78%) with average age of 58 years while the  average   age  of  infection   in  female  was  65  years.  The  antimicrobial  susceptibility  tests showed  that  Streptococcus suis   was  susceptible  to  penicillin,  ceftriaxone and  vancomycin, The decreasing  trend of susceptibility pattern of penicillin was observed (from 95% to 88%). However,  penicillin is still the most effective drug  used to treat  Streptococcus suis infection.


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