Clinical Value of Treponema pallidum Real-Time PCR for Diagnosis of Syphilis

R Heymans, JJ Van Der Helm… - Journal of Clinical …, 2010 - Am Soc Microbiol
The diagnosis of syphilis can be complicated when it is based on diverse clinical
manifestations, dark-field microscopy, and serology. In the present study, therefore, we …

High performance and acceptability of self-collected rectal swabs for diagnosis of Chlamydia trachomatis and Neisseria gonorrhoeae in men who have sex with men …

JJ van der Helm, CJPA Hoebe… - Sexually transmitted …, 2009 - journals.lww.com
Background: Identification of sexually transmitted infections (STI) is limited by the infrequent
assessment of rectal STI. This study assesses usability of self-collected rectal swabs (SRS) …

The hepatitis C epidemic among HIV-positive MSM: incidence estimates from 1990 to 2007

JJ van der Helm, M Prins, J del Amo, HC Bucher… - Aids, 2011 - journals.lww.com
Background: Outbreaks of acute hepatitis C virus (HCV) infection among HIV-infected MSM
have been described since 2000. However, phylogenetic analysis suggests that the spread …

Impact of HIV-1 subtype on CD4 count at HIV seroconversion, rate of decline, and viral load set point in European seroconverter cohorts

…, M Prins, R Geskus, J van der Helm… - Clinical infectious …, 2013 - academic.oup.com
Background. Human immunodeficiency virus type 1 (HIV-1) subtype may influence disease
progression. We compared CD4 lymphocyte cell count levels at seroconversion, decline …

[HTML][HTML] Molecular assessment of bacterial vaginosis by Lactobacillus abundance and species diversity

JAM Dols, D Molenaar, JJ van der Helm… - BMC infectious …, 2016 - Springer
Background To date, women are most often diagnosed with bacterial vaginosis (BV) using
microscopy based Nugent scoring or Amsel criteria. However, the accuracy is less than …

Effect of HCV infection on cause-specific mortality after HIV seroconversion, before and after 1997

J van der Helm, R Geskus, C Sabin, L Meyer… - Gastroenterology, 2013 - Elsevier
BACKGROUND & AIMS: Individuals with human immunodeficiency virus (HIV) infection
frequently also are infected with hepatitis C virus (HCV)(co-infection), but little is known …

The Cervicovaginal Microbiota in Women Notified for Chlamydia trachomatis Infection: A Case-Control Study at the Sexually Transmitted Infection Outpatient Clinic in …

C Van Der Veer, SM Bruisten… - Clinical Infectious …, 2017 - academic.oup.com
Background Increasing evidence suggests that the cervicovaginal microbiota (CVM) plays
an important role in acquiring sexually transmitted infections (STIs). Here we study the CVM …

Men who have sex with men more often chose daily than event‐driven use of pre‐exposure prophylaxis: baseline analysis of a demonstration study in Amsterdam

E Hoornenborg, RCA Achterbergh… - Journal of the …, 2018 - Wiley Online Library
Abstract Introduction The Amsterdam Pr EP project is a prospective, open‐label
demonstration study at a large sexually transmitted infection (STI) clinic. We examined the …

Lack of decline in hepatitis C virus incidence among HIV-positive men who have sex with men during 1990–2014

DK Van Santen, JJ Van Der Helm, J Del Amo… - Journal of …, 2017 - Elsevier
Background & Aims Hepatitis C virus (HCV) incidence among HIV-positive men who have
sex with men (MSM) has increased since 2000, although there are regional differences. We …

Decline in incidence of HIV and hepatitis C virus infection among injecting drug users in A msterdam; evidence for harm reduction?

AS de Vos, JJ van der Helm, A Matser, M Prins… - …, 2013 - Wiley Online Library
Abstract Aims In Amsterdam, HIV prevalence has nearly halved among injecting drug users
(IDU) since 1990. H epatitis C virus (HCV) prevalence also declined; HIV and HCV …