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The number of cases of syphilis in Rotterdam has increased dramatically since 1995. The prevalence of early syphilis in 1997 was highest among street prostitutes (16%). Some prostitutes could not be reached for further evaluation and treatment, probably due to their addiction to hard drugs. Prophylactic treatment for syphilis was given to most street(More)
A ten-fold increase in Salmonella Typhimurium DT104 cases in The Netherlands during September-November 2005 prompted an outbreak investigation. A population-based matched case-control study included 56 cases and 100 controls. Risk factors for infection were consumption of a pre-processed raw beef product (odds ratio 4.2, 95% confidence interval 1.5-12.0)(More)
OBJECTIVE To detect risk groups in an increase of early (infectious) syphilis. DESIGN Retrospective study of patient records. METHOD Data from visitors with an early syphilis were collected from their respective medical records in the outpatient clinic for sexually transmitted diseases (STD) of the Academic Hospital Rotterdam-Dijkzigt, the Netherlands,(More)
A nationwide laboratory-based surveillance study of invasive group A streptococcal (GAS) infections was conducted in The Netherlands from May 1994 until December 2003 (average population during this period was 15 729 704). Microbiologically invasive isolates were obtained from 1504 patients, with most (70%) isolates cultured from blood. There was a clear(More)
OBJECTIVE To survey trends in data on hepatitis A using information from the notification system of the Municipal Medical and Health Services 1993-2002. DESIGN Retrospective, descriptive. METHOD Data collected from the notification system of the Dutch Municipal and Medical Services were analyzed. RESULTS From 1993 to 2002, 64.4%, 6.5% and 11.5% of(More)
The endangered Cape mountain zebra (Equus zebra zebra) is protected in small numbers in a few isolated populations in South African game parks. Since 1995, sarcoid lesions appeared in zebras in two of the parks. This study was undertaken to investigate if bovine papillomavirus (BPV) is associated with sarcoids in these zebras. A conventional PCR, targeting(More)
Salmonella remains an important source of food-related outbreaks of gastro-enteritis. In The Netherlands, regional laboratories send cultured Salmonella isolates to the National Institute of Public Health and the Environment (RIVM) for sero- and phage typing. Abnormal increases in the incidence of Salmonella infections are monitored by means of(More)