background: klebseilla pneumoniae causes urinary tract infections, nosocomial pneumonia and intra-abdominal infections. capsular antigens are considered to be the ultimate virulence determinants. among 77 capsular serotypes of k. pneumoniae, serotypes k1 and k2 are the most virulent ones in humans. objectives: we designed a pcr method for detection of capsular serotypes k1 and k2 of k. pneumoni...

biotypes, serotypes and lysotypes of 38 yersinia isolated from 48 water samples were studied. these strains belonged to y.enterocolitica, y.frederiksenii, y.kristensenii and y. intermedia. except 23.7% of non-serotypable strains, ten different serotypes were isolated of which 0:6 and 0:10 kl were the most frequent. the serotypes 0:3, 0:8, 0:9 responsible for almost all registered cases of yersi...

Background: Identifying regional types and evaluating the frequency of pneumococcal strains has become increasingly important especially in vaccination. The purpose of this study was the identification and frequency determination of our regional serotype and evaluation of the performance of recent type specific multiplex PCR for the diagnosis of streptococcus pneumonia serotypes. Methods: All ...

background: the purpose of this study was to find out the frequency of different serotypes of enteropathogenic es­cherichia coli (epec) among healthy/diarrheal cases. methods: a total of 191 strains, 111 from diarrheal and 80 from asymptomatic persons were examined. determination of the epec sero­groups was performed by agglutination tests using polyvalent and monovalent o antiserum. pcr-rflp a...

background: identifying regional types and evaluating the frequency of pneumococcal strains has become increasingly important especially in vaccination. the purpose of this study was the identification and frequency determination of our regional serotype and evaluation of the performance of recent type specific multiplex pcr for the diagnosis of streptococcus pneumonia serotypes. methods: all i...

aim : the purpose of this study was to characterize phenotypically and genotypically the serotypes of the e. coli o111 associated with diarrheal disease and assess the variation among serotypes in terms of specific virulence factors and hela cells adherence patterns. background : escherichia coli o111 serogroups are prevalent in endemic or sporadic cases of diarrhea, especially in developing ar...

results the pellet of the 146s antigen of fmd virus serotype a was developed at a concentration of sucrose 50%. absorbance rate of the foot-and-mouth disease virus serotypes a at wavelengths of 240, 259 and 280 nm was 1.238, 1.573 and 1.157, respectively. moreover, the amount of 146s antigen at the same wavelengths was 163.416, 207.636 and 152.724 μg/ml, respectively. the amount of purified pro...

background and objectives: streptococcus pneumoniae is the most common cause of invasive infections among both young children and elderly people. common serotypes causing invasive diseases and the emergence of carriers of streptococcus pneumoniae in iran is not yet known. past-vaccine surveillance studies of serotype prevalence patterns in iran are necessary to monitor the epidemiology of strep...