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bacteriological studies of cholera in visakhapatnam region of andhra pradesh. 1976977064
epidemiological patterns and incidence of bio-, sero- and phage types of vibrio cholerae in hyderabad, india, during 1971-1984.during 1971-1984 out of 44,762 gastroenteritis cases bacteriologically examined, 4240 (9.5%) vibrio cholerae were isolated in hyderabad, india. out of them 1329 (31.3%) were classical and 2911 (68.7%) were el-tor biotypes. the changeover from classical to el-tor cholera was observed in hyderabad during 1975 and persisted. during this 14 year period four major outbreaks with v. cholerae serogroup o1 ogawa, v. cholerae biotype el-tor serogroup o1 ogawa were observed. phage types 1, 2 and 4 were pr ...19883067503
cholera el tor at kurnool. 19704945645
nontoxigenic vibrio cholerae 01 serotype inaba biotype el tor associated with a cluster of cases of cholera in southern india.thirteen strains of vibrio cholerae 01 belonging to the inaba serotype el tor biotype isolated from patients during an outbreak of cholera in the town of warangal in southern india were found to be nontoxigenic (nt), since they did not produce cholera toxin or hybridize with dna probes specific for cholera toxin, zot, or ace. the unheated and heated culture supernatants of the nt v. cholerae 01 evoked a rapid cell-rounding effect when introduced on confluent layers of cho and hela cells which co ...19968727886
emerging & re-emerging bacterial pathogens in india.in spite of major successes against infectious diseases in the 20th century, new infectious diseases have emerged and old ones re-emerged in recent decades in different parts of the world. a brief survey of emerging and re-emerging bacterial diseases of public health importance in india is presented in this paper. plague re-appeared in two outbreaks in maharashtra and gujarat in 1994, indicating a breakdown of the public health measures that had prevented its occurrence for several decades. lept ...19968926026
clonal analysis of non-toxigenic vibrio cholerae o1 associated with an outbreak of cholera.we examined the clonal relationships among eight clinical isolates of non-toxigenic (nt) v. cholerae o1 associated with a cluster of cases of cholera in warangal, andhra pradesh in south india and compared their relatedness to toxigenic o1 strains of classical and e1tor biotypes and with o139 bengal strains of v. cholerae by pulsed-field gel electrophoresis (pfge). phylogentic analysis of the noti restriction fragment length polymorphism showed that all the nt. v. cholerae o1 strains formed a ti ...199910491912
molecular characterization reveals involvement of altered el tor biotype vibrio cholerae o1 strains in cholera outbreak at hyderabad, india.thirty-four vibrio cholerae isolates collected from a cholera outbreak in hyderabad, south india were found to belong to serogroup ol biotype el tor serotype ogawa. the genotype of all the isolates was confirmed by pcr assays. all the isolates were found pcr positive for ctxab, ompw, rflol, rtxc, and tcpa genes. all the isolates but one harboured rstr ( el tor ) allele. however, one isolate carried both rstr ( el tor ) as well as rstr ( classical ) alleles. cholera toxin (ctxb) genotyping of the ...201121538250
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