Tue, 23 Mar 1999 Hi, In Oktober 1998 I had a conversation with Prof. Dr. Kenny De Meirleir from the "Vrije Universiteit Brussel". I was there, because of the lab. test for the Low Molecular Weight RNase-L enzym. I am a PWC for 18 years. The outcome of my test was 4,3. Dr. De Meileir said to me: "The number of the score don't say anything about the severity of CFS, but it says more about the duration. When you have this illness for 18 years, I would expect a small peak, but not as high as yours; this is rather high". We talked about CFS, RNase-L, Ampligen, etcetera and later on he said: "The RNase-L interferes with the protein-metabolism of the cell and this can cause all kinds of symptoms: fatigue and a bad recuperation are some of them. We now do understand the immunologic basis mechanism of CFS. Because of your RNase-L test, it is for sure, that your illness has a viral origin". Than I asked him, if this means, that CFS is infectious between people in normal daily life. Dr. De Meirleir: "I don't think so. But BLOOD PRODUCTS CAN TRANSMIT IT; WE ARE SURE OF THAT. WE HAVE A RATHER LARGE NUMBER OF CFS PATIENTS, WHO BECAME ILL IMMEDIATELY AFTER TRANSFUSION...." On February 26th last he made this alarming message public. Below is an abstract, which you can find on Ted Shaw's excellent web side: http://www.networx.com.au/mall/cfs/Abstra99.htm With tulips from Amsterdam, Jan van Roijen ************************************************** Sydney February 1999 CFS Conference Abstract: BLOOD TRANSFUSION AND CHRONIC FATIQUE SYNDROME K. De Meirleir, P. De Becker, I. Campine. Human Physiology and Medicine, Vrije Universiteit Brussel, Brussels, Belgium We analysed the data of 1210 consecutive patients complaining of chronic fatigue who visited our fatigue clinic at the Vrije Universiteit Brussel. In this group, 752 patients fulfilled the CDC criteria for CFS (Fuduka, 1994). Of those CFS patients, 34 (4.5%) have a common factor in their past medical history that immediately preceded the onset of their CFS. These patients had received a blood transfusion a few days to a week prior to developing a 'flu-like syndrome that later proved to be the acute onset of their CFS. Another 8 patients also received a blood transfusion but their illness only started at least 2 months later, so that we cannot take these patients into our calculations. None of these post-transfusion patients developed hepatitis C or other types of viral hepatitis. Some have antibodies (IgG) against CMV or EBV, but the development of these antibodies in time relationship to the blood transfusion could not be determined. In 9 of 34 patients the LMW RNaseL test was performed; in all 9 patients the low molecular RnaseL accounts for the upregulation of the total RNaseL enzyme activity. This 2-5A synthetase RNaseL pathway is activated in viral disorders. THESE FINDINGS POINT TOWARDS A TRANSMITTABLE CAUSE IN THIS SUBSET OF CFS PATIENTS IN WHICH ACUTE ONSET WAS TEMPORALLY LINKED TO BLOOD TRANSFUSION. AS VIRUSES AND POSSIBLY OTHER MICRO-ORGANISMS SEEM TO BE ABLE TO TRIGGER AN ACUTE ONSET OF CFS AND THE FACT THAT RNASE L DYSFUNCTION SEEMS TO BE PREFERENTIALLY RELATED TO CFS, IT COMES AS NO REAL SURPRISE THAT RECEIVERS OF A BLOOD TRANSFUSION, OFTEN BEING IN A WEAKENED STATUS, CAN DEVELOP CFS. WE THEREFORE WOULD ADVISE CFS PATIENTS NOT TO BE BLOOD DONORS AND SECONDLY THAT THE ADMINISTRATION OF BLOOD TRANSFUSIONS HAS TO BE VERY CAREFULLY CONSIDERED AND ONLY BE GIVEN WHEN STRICTLY NECESSARY AND NOT AS A STANDARD PROCEDURE AFTER E.G. THE DELIVERY OF A BABY.