Widely distributed and predominant CTX-M extended-spectrum beta-lactamases in Amsterdam, The Netherlands.

Three hundred sixty Enterobacteriaceae and nonfermenting gram-negative bacilli, isolated during one week in May 2004 at five hospitals in Amsterdam, The Netherlands, were evaluated for the presence of extended-spectrum beta-lactamases (ESBLs). A prevalence of 7.8% was found, in contrast to the 1% observed in 1997. CTX-M ESBLs dominated, and four types were identified in 18 isolates.

Evaluation of the rapid immunoassay determine HIV 1/2 for detection of antibodies to human immunodeficiency virus types 1 and 2.

We evaluated the reliability of a rapid human immunodeficiency virus type 1 test for quick clinical decision making, such as in needle-stick accidents. The test was evaluated with 1,160 patients. It proved to be a simple and useful test with 99.6% specificity and 99.4% sensitivity. One patient with late-stage AIDS had a false-negative result.

[Reducing the risk of blood-transmitted infections of HIV, hepatitis B or C virus in a teaching hospital in Amsterdam--evaluation of a protocol for needlestick accidents among hospital staff during the period 1997-2001]. / Risicoreductie van bloedoverdraagbare besmetting met HIV, hepatitis-B- of -C-virus in een opleidingsziekenhuis in Amsterdam--evaluatie van een protocol voor 'prikaccidenten' bij ziekenhuismedewerkers, 1997-2001.

OBJECTIVE: To evaluate a protocol for hospital staff aimed at reducing their risk of exposure to blood-transmitted infections. DESIGN: Prospective. METHOD: In August 1997 a protocol was introduced to the Onze Lieve Vrouwe Gasthuis Hospital in Amsterdam, with procedures to be followed after percutaneous or mucocutaneous blood contact in which there was a chance of transmission of hepatitis B (HBV) or C (HCV), as well as guidelines for the prescription of post-exposure prophylaxis (PEP) after accidents with an HIV risk. In the period 1 August 1997-30 June 2001 data were collected from registration forms that reported accidents and the ensuing events. RESULTS: A total of 403 accidents were reported by 138 (34.2%) physicians, 135 (33.5%) ward nurses, 46 (11.4%) operation assistants, 30 (7.4%) co-assistants, 21 (5.2%) analysts and 33 (8.2%) persons with another position. There was a constant increase in the number of reports over the period. The seroprevalence of the source patients was: 6.9% (25/360) HIV, 8.1% (6/74) HBV and 6.3% (23/363) HCV. PEP was prescribed on 46 occasions: 15 times for an HIV positive source and 31 times for what was initially an unknown HIV source. Following the introduction of a rapid HIV test in September 1999, there was a reduction in the number of unnecessary PEP prescriptions from 4 in 1997, 7 in 1998 and 16 in 1999 to 3 in 2000 and 1 in 2001. All 15 persons who were correctly started on a PEP treatment took the medication for a period of 28 days despite many side effects. No seroconversions were established during the follow-up period of 6 months.