Serovars, auxotypes, and plasmid profiles of PPNG strains with Asian type plasmid isolated in Amsterdam.

Ansink-Schipper, M C; Bygdeman, S; Klingeren, B. Van; Sandström, Eric

doi:10.1136/sti.64.3.152

Cited by 7 publications

(7 citation statements)

References 4 publications

(1 reference statement)

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“…(2) 16 (2) 6 Most (73%) of the serovars were encountered only during one or two quarters of the study. They accounted for 16% of the isolates.…”

Section: Resultsmentioning

confidence: 99%

“…'7 In a study from Amsterdam during two time periods, 1981-1982 and 1985, Arst/Aedih (IA-6) was the only common serovar among PPNG strains on both occasions. 6 In the present study we studied the dynamics and transmission of PPNG strains in the society by analysing results of serovar determination and contact tracing in conjunction. The 43 patients with PPNG strains, acquired abroad and who were contact traced at one of the venereal clinics, either did not transmit their infection into the society at all or did only transmit the infection to their steady partner where the transmission ended.…”

Section: A Majority (65%)mentioning

confidence: 99%

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Temporal changes in the gonococcal serovar patterns in Stockholm during two years with special reference to PPNG strains.

Rudén

1994

Sexually Transmitted Infections

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Objective-To analyse temporal changes in gonococcal serovar patterns in Stockholm during a two year study period (1987)(1988)(1989) Arost/Aedgkih (IA-1, IA-2), BroptlBajk (IB-3, IB-6), BrpyustlBacejk (IB-1, IB-2) were the most prevalent in the overall study, accounting for 60% of the isolates during the first quarter of the study and 36% of the isolates during the last quarter. Fifty-seven percent of the patients were infected in Stockholm (endemic infection). The proportion of endemic isolates among the three most common serovars declined throughout the study period (77% during the first quarter; 47% during the last quarter). A total of 32 PhIGS-serovars were recognised among 80 PPNG strains. Only four of these 32 serovars were encountered during more than two quarters. Of 57 patients with PPNG strains and with geo-

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“…(2) 16 (2) 6 Most (73%) of the serovars were encountered only during one or two quarters of the study. They accounted for 16% of the isolates.…”

Section: Resultsmentioning

confidence: 99%

Section: A Majority (65%)mentioning

confidence: 99%

Temporal changes in the gonococcal serovar patterns in Stockholm during two years with special reference to PPNG strains.

Rudén

1994

Sexually Transmitted Infections

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“…With regard to PPNG (Table 6) it is clear that the majority (67%) of our PPNG belong to serovar Aedih/ Arst. Serovar Arst also predominated amongst PPNG strains in Athens (15) while in Amsterdam Aedih/Arst was the only serovar common in strains isolated in 1981-82 as well as in 1985 (2). Ansink-Schipper et al (2) considered that Aedih/Arst strains may have a specific capacity to survive and be transmitted compared with strains of the 1B serovars or may have resulted from repeated importation of PPNG strains of this type from places such as South Asia where this serovar is dominant in 1A strains.…”

Section: Double Infectionsmentioning

confidence: 99%

“…Serovar Arst also predominated amongst PPNG strains in Athens (15) while in Amsterdam Aedih/Arst was the only serovar common in strains isolated in 1981-82 as well as in 1985 (2). Ansink-Schipper et al (2) considered that Aedih/Arst strains may have a specific capacity to survive and be transmitted compared with strains of the 1B serovars or may have resulted from repeated importation of PPNG strains of this type from places such as South Asia where this serovar is dominant in 1A strains. Clearly we have a limited population of 1A PPNG within Scotland and as well as controlling these isolates we should be vigilant to prevent the establishment of additional PPNG serovars.…”

Section: Double Infectionsmentioning

confidence: 99%

Gonococcal infection within Scotland: Antigenic heterogeneity and antibiotic susceptibility of infecting strains

et al. 1990

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Two panels of monoclonal antibody reagents were used to serotype all strains of Neisseria gonorrhoeae isolated from four separate geographical areas serving two million of the five million Scottish population. Serotype 1B isolates accounted for 60% of the 869 strains examined and were more prevalent than 1A isolates in each geographical area. A total of 11 1A serovars and 47 1B serovars were recognised. Only two of the 11 1A serovars (Aedgkih/Arost and Aedih/Arst) were found in every centre but these accounted for over 90% of the 1A isolates. Although there was a total of 47 different 1B serovars over 80% of the isolates were accounted for by the ten most commonly encountered serovars. There were, however, marked geographical differences within both major and minor serovars. There was a highly significant difference (P less than 0.001) between protein 1A and 1B serovars with respect to their susceptibility to penicillin. Within each protein 1 type there were also differences in antibiotic susceptibility. Penicillinase-producing N. gonorrhoeae (PPNG) were found in all centres and accounted for 24 (2.8%) of the 869 isolates. The majority of the PPNG (71%) were serotype 1A and with one exception were serovar Aedih/Arst. PPNG strains accounted for 37% (16) of the 43 Aedih/Arst isolates. Epidemiological, diagnostic and therapeutic implications arising from the distinct geographical differences in the pool of circulating gonococci are discussed.

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“…Strains belonging to A/S class proto/IA-4 were also shown to have been imported from Africa into Europe and have been found in our population and in those from the Netherlands. 19 It is hoped that with the wide availability of a standard panel of monoclonal antibodies for serotyping N . gonorrhoeae it will be possible to monitor the future movement of strains of PPNG.…”

mentioning

confidence: 99%

Changes in penicillinase-producing Neisseria gonorrhoeae isolated in London

Ison

Easmon

1989

Journal of Medical Microbiology

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Serovars, auxotypes, and plasmid profiles of PPNG strains with Asian type plasmid isolated in Amsterdam.

Cited by 7 publications

References 4 publications

Temporal changes in the gonococcal serovar patterns in Stockholm during two years with special reference to PPNG strains.

Temporal changes in the gonococcal serovar patterns in Stockholm during two years with special reference to PPNG strains.

Gonococcal infection within Scotland: Antigenic heterogeneity and antibiotic susceptibility of infecting strains

Changes in penicillinase-producing Neisseria gonorrhoeae isolated in London

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