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Home Eurosurveillance Edition  2016: Volume 21/ Issue 11 Article 3
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Eurosurveillance, Volume 21, Issue 11, 17 March 2016
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Rob, Jůzlová, Krutáková, Zákoucká, Vaňousová, Kružicová, Machala, Veselý, Jilich, and Hercogová: Steady increase of lymphogranuloma venereum cases, Czech Republic, 2010 to 2015

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Citation style for this article: Rob F, Jůzlová K, Krutáková H, Zákoucká H, Vaňousová D, Kružicová Z, Machala L, Veselý D, Jilich D, Hercogová J. Steady increase of lymphogranuloma venereum cases, Czech Republic, 2010 to 2015. Euro Surveill. 2016;21(11):pii=30165. DOI: http://dx.doi.org/10.2807/1560-7917.ES.2016.21.11.30165

Received:03 March 2016; Accepted:17 March 2016


In this report we present data on 83 lymphogranuloma venereum (LGV) cases from a total number of 88 LGV cases reported in the Czech Republic between 2010 and 2015, with 40 cases reported in 2015 alone.

Background

LGV is a sexually transmitted infection (STI) caused by the L1, L2 and L3 serovars of Chlamydia trachomatis [1]. Since 2003, LGV has been endemic in western European men who have sex with men (MSM) [1]. Recently, the number of reported cases has been increasing in countries like the United Kingdom (UK), the Netherlands and Spain [2-5]. The first case who presented with typical clinical manifestations compatible with LGV in eastern and central Europe was detected in 2010 in the Czech Republic at the Dermatovenerology department, Na Bulovce Hospital, Prague, in cooperation with the associated AIDS-Centre and the National Reference Laboratory for Chlamydia (NRL) in Prague [6]. Over the last five years, we have noticed an increasing number of patients with LGV in the Czech Republic. Additionally, four cases of LGV in HIV-positive Hungarian men were diagnosed between November 2012 and February 2014 in Hungary [7]. Data from other countries in eastern and central Europe are not publically available.

Study design and population

The data for this report were collected between February 2010 (when the first case of LGV was detected in the Czech Republic) and December 2015. All the patients described in this report were examined at the Department of Dermatovenerology, Na Bulovce Hospital, Second Medical Faculty, Charles University, Prague, in the Czech Republic. The department is a specialised secondary care centre and annually examines between 2,000 and 2,500 patients for STIs (of these, about a quarter are MSM or men who have sex with women and men (MSWM)). It also cooperates with the Department of Infectious Diseases at Na Bulovce Hospital to provide care for more than 1,200 HIV-positive patients. C. trachomatis nucleic acid amplification tests (NAATs) were performed on all patients with symptoms of urethritis or proctitis, all contacts reported by patients as sexual partners with confirmed chlamydial infection, on all patients with newly diagnosed syphilis, and on patients with a history of risky sexual behaviour (recent unprotected intercourse with unknown partners or foreigners or with multiple partners). This testing scheme was the same throughout the whole period reported here.

Laboratory methods

Standard validated NAATs for C. trachomatis were performed on samples taken from the rectum, urethra, pharynx and ulcers. All rectal samples that tested positive for C. trachomatis, as well as urethral and pharyngeal samples in MSM with risky sexual behaviour, were further tested for the LGV genotype in the NRL. The LGV genotype was identified by PCR amplification of a 262 bp fragment of target DNA using the dual-priming oligonucleotide (DPO) Seeplex STI Master Panel 5 test developed by Seegene Inc. (Korea). This method targets the pmp-H gene and enables the simultaneous detection of LGV-serovars and the differentiation of L1–3 from other serovars [8].

Data from confirmed cases

From a total number of 193 MSM and MSWM with a positive C. trachomatis test, 83 cases (43.0%) were further confirmed to have LGV by our department. While there was only one case of LGV diagnosed in 2010, we diagnosed 35 cases of LGV in 2015. In 2014 and 2015, the number of LGV cases was higher than the number of non-LGV chlamydial infections in MSM and MSWM (Figure).

Figure

Number of lymphogranuloma venereum cases and Chlamydia trachomatis D-K infections in MSM and MSWM, Na Bulovce Hospital, Prague, Czech Republic, 2010 to 2015 (n=83)

/images/dynamic/articles/21412/16-00184-f1

LGV: lymphogranuloma venereum; MSM: men who have sex with men; MSWM: men who have sex with women and men.

Of the 83 patients with LGV, 76 (91.6%) were MSM, whereas only 7 (8.4%) were MSWM. In total, 70 (84.3%) of the patients were HIV-positive and 13 (15.7%) were HIV-negative at the time of diagnosis and in repeated tests three months later. The most common symptoms were rectal infections 72 (86.7%), whereas urethral 7 (8.4%), pharyngeal 2 (2.4%) and extra genital ulcers 2 (2.4%) were rare. In 24 (28.9%) patients the infections were asymptomatic. In six (7.2%) cases, patients were treated for inflammatory bowel disease (IBD) before the correct diagnosis of LGV was made. Risky sexual behaviour was reported by 64 (77.1%) patients. Co-infections were present in 40 (48.2%) cases, whereas syphilis 22 (26.5%) and gonorrhoea 24 (28.9%) were the most common. Hepatitis C was detected in only one case (Table).

Table

Confirmed cases of lymphogranuloma venereum by selected characteristics, Na Bulovce Hospital, Prague, Czech Republic, 2010 to 2015 (N=83)


Characteristics Number (percentage)
Overall number of confirmed cases 83 (100.0%)
Age group (years)
15–24 5(6.0%)
25–34 33 (39.8%)
35–44 35 (42.2%)
45–54 9 (10.8%)
55–64 1 (1.2%)
Sexual orientation
MSM 76 (91.6%)
MSWM 7 (8.4%)
HIV status
Positive 70 (84.3%)
Negative 13 (15.7%)
Localisation
Rectum 72 (86.7%)
Urethra 7 (8.4%)
Pharynx 2 (2.4%)
Ulcer in other location 2 (2.4%)
Symptoms
Yes 59 (71.1%)
No 24 (28.9%)
Co-infection
Syphilis 22 (26.5%)
Gonorrhea 24 (28.9%)
Chlamydia trachomatis (D-K) 6 (7.2%)
Hepatitis C 1 (1.2%)
Reinfection
Yes 7 (8.4%)
No 76 (91.6%)
Clinical history of risky sexual behavioura
Yes 64 (77.1%)
No 19 (22.9%)

MSM: men who have sex with men; MSWM: men who have sex with women and men.

a Recent unprotected intercourse with unknown partners, foreigners or with multiple partners.

Discussion

In this report we provide data on LGV diagnoses from one reference centre to understand the trends and epidemiology of this infection in a country in eastern/central Europe. The characteristics of the patients in our centre are very similar to those in the Netherlands and the UK [3,9]. The diagnosis of LGV is predominantly in HIV-positive MSM with a previous history of STIs. Given that our centre is the referral centre for the whole country, patients from other parts of the Czech Republic and not only from Prague were diagnosed here. Thus, our data suggest that LGV infection is spreading in the Czech Republic. Only one report from Hungary published in 2015 described four cases of LGV [7]. The lack of data from eastern and central Europe contrasts sharply with the situation in western Europe, where several outbreaks have been reported recently [2,4]. This may be due to lower awareness among clinicians in these countries, or less testing and reporting, or less transmission.

The increasing number of LGV cases in the Czech Republic is probably due to several interconnected reasons. LGV is an infection predominantly found in HIV-positive MSM. The number of HIV-positive patients in the Czech Republic has been steadily growing by 10-15% every year over the last two decades [10]. More than 80% of these newly diagnosed HIV patients in the Czech Republic are MSM. According to the anecdotal evidence, sexual tourism in the Czech HIV-positive MSM community is also quite widespread. Several patients with confirmed infections in our study reported having had sexual contacts with foreigners from western Europe (Germany, Spain, UK) where LGV outbreaks have been described recently [1,2,4]. These imported infections may be further spreading in some subgroups of the local Czech MSM community with high-risk sexual behaviour. This conclusion is supported by the increasing number of gonococcal, non-LGV chlamydial and syphilis cases within this subgroup.

LGV is mandatorily notifiable in the Czech Republic [11]. The very small number of cases notified by other departments may be explained by the low level of awareness among dermatovenerologists, proctologists and urologists in the region. This fact is reflected in the cases with rectal symptoms. These patients were not requested to disclose information about having had receptive anal sex or about having been tested for C. trachomatis infection. Six patients with rectal LGV infection in our group were treated for IBD over the course of several months prior to the correct diagnosis. Four patients received immunosuppressive treatment (azathioprine, systemic corticosteroids), which aggravated their problems. It is therefore also necessary to educate gastroenterologists to check the patient´s clinical history for receptive anal intercourse and to perform tests for C. trachomatis in men with IBD symptoms [12].

Another problem is the very limited number of laboratories which are able to perform confirmatory tests. In the Czech Republic, this confirmatory test can only be performed by one laboratory (NRL). We are not aware of any other laboratory in the region that does routinely this form of testing.

The question also remains as to the level of awareness that exists in the other countries of the eastern and central European region because the patients with the LGV infection in our cohort also reported having had sexual contacts with individuals from other countries in the region (Hungary, Poland and Slovakia). It is therefore possible that there is a similar trend in these countries as well.

Nearly half of the patients in our group had another previously undiagnosed sexually transmitted co-infection at the time of the LGV diagnosis. This reinforces the need for testing for HIV, syphilis, hepatitis C and also for gonococcal infections in these patients. In our study, 24 (28.4%) of the LGV infections were asymptomatic. These asymptomatic LGV cases were only diagnosed through NAATs screening of chlamydial infections in patients with newly diagnosed syphilis. Our department introduced this form of screening in 2009 because of the high number of asymptomatic gonococcal and chlamydial predominantly rectal infections. The percentage of asymptomatic infections in our group was almost identical to a recently published study from the UK [13]. Since nine patients had pharyngeal and urethral LGV, we recommend testing not only rectal samples, but also samples from the urethra and pharynx in high-risk patients. Asymptomatic or undiagnosed patients can quickly spread the infection within the MSM community because of frequent change of sexual partners and because having concurrent relationships are common in some parts of the MSM community [14,15]. The early diagnosis of symptomatic patients, tracing the sexual contacts of patients with confirmed LGV, and screening of asymptomatic high-risk patients (HIV-positive MSM with risky sexual behaviour) may help to control the spread of LGV. It is also necessary to educate patients about the risks of the disease, symptoms, protection, and points of contact in case of symptoms.

The main limitation of this report is that we are only presenting data from one centre; however, this is because we are the only centre that systematically focuses on LGV infections in our region. The number of reported asymptomatic LGV cases at our clinic may be higher compared to other centres due to the routine C. trachomatis screening we carry out on patients with newly diagnosed syphilis. We are not able to report the proportion of LGV positive tests from all tests performed for C. trachomatis because positive tests in heterosexual patients were not further tested for LGV.

Conclusion

The increasing number of patients with LGV in our department suggests that the LGV infection is already established and spreading in the Czech Republic and may be present in other countries in the region. Dermatologists, proctologists and gastroenterologists must be more aware of this condition, particularly in patients with rectal symptoms. To keep the situation under control, it is necessary to intensify testing and screening for chlamydial infections and LGV confirmation in eastern and central Europe.


Acknowledgements

We would like to thank our colleagues from Microbiology, Dermatovenerology, Infectious Diseases departments, Na Bulovce Hospital and staff from the National Reference Laboratory for Chlamydia who contributed to the management of cases.

Conflict of interest

None declared.

Authors’ contributions

FR: prepared the manuscript, collected and analysed data;

KJ: prepared the manuscript, collected data;

HK: performed LGV genotyping, interpretation of data, critically revised the manuscript;

HZ: performed LGV genotyping, interpretation of data, critically revised the manuscript;

DVa: critically revised the manuscript, collected and analysed the data;

ZK: collected data, interpretation of data, critically revised the manuscript;

LM: collected data, critically revised the manuscript;

DVe: collected data, critically revised the manuscript;

DJ: collected data, critically revised the manuscript;

JH: interpretation of data, critically revised the manuscript;

All authors give final approval of the version to be submitted.


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