Guest guest Posted April 30, 2004 Report Share Posted April 30, 2004 UK versus South African Test UK tests are not comparable with the South African tests. UK laboratories do have a Rickettsia test but it is not the same test. Below is the main arguments on the UK versus South African Tests; 1. The nature of a Chronic Rickettsia Infection (CRI) is that it suppresses the immune response (we know that often people with ME have a poor immune response) and hence even when infected they do not generate the antibodies very well. Hence you need a very sensitive test to detect the few antibodies produced in Chronic Rickettsial patients. The UK tests are looking for a significant number of antibodies in order to infer a Rickettsial infection. However this may be true for an Acute Reckettsial infection but CRIs are very often characterised by their poor immune response. Hence the reported unreliability of the titration tests (these are the UK tests) and the risk of false negatives i.e. a person being incorrectly told that they do not have a Rickettsial infection when in fact they do. I refer you to the third paragraph of the introduction of the attached document. Here an alternative test was used on Dr Jadin's friend which kept being returned as negative. This test is likely to have been a titration test which is different to Prof Jadin's microagglutination test that came back positive. It is like comparing a tractor with a racing car. They are both vehicles but do quite different things. The microagglutination test is not available in this country, only in South Africa. 2. The Prof Jadin test is a highly sensitive microagglutination test which agglutinates if any antibodies are present whilst the titration tests are not sensitive at the lower end. As Dr Jadin points out there is interpretation involved in the titration tests whereas with the microagglutination tests it either agglutinates or it does not and there is no interpretation involved, the answer is either yes or no contact with Rickettsia. A negative result on the microagglutination test conclusively eliminates Rickettsia from a medical enquiry. A positive result on this test however does not automatically mean that you have an active CRI. It simply means that you have had exposure to Rickettsia. The diagnosis of active CRI is a clinical one that requires medical expertise and involves a positive microagglutination test, a full medical history and clinical examination of the patient. Without getting too complicated this ties in with the earlier comments on active and dormant Rickettsia mentioned in the previous article. This is why we are trying to run a trial in Hull to get this medical expertise into the country. 3. As somebody progresses through treatment the antibiotherapy enables the immune system to respond to the infection. Hence as treatment progresses an individual's antibody level will naturally increase. At some point during antibiotherapy the UK tests will be able to detect the increased levels of antibodies, the point at which this occurs will differ from person to person depending on how weak their immune response was to start with. 4. UK labs would need to carry out a trial with a group of untreated ME sufferers sending samples to both UK and South African labs in order to assess the extent of any correlation. However Prof Jadin's work indicates that this would not be found. Finally beware of treatment. Medical wisdom in this country says that Rickettsia is an acute illness that you treat with antibiotics for 2 weeks. This does not take into account the life cycle of the Rickettsia bugs and their chronic infestation revealed by the research of Prof Jadin. Two weeks may wipe out some of the population that is active at the time but will not be sufficient to treat a CRI. You may ask why after all these years why the link has not been established between Rickettsia and Chronic Fatigue in the UK. A diligent doctor exploring all the possible causes would have been hit by the double whammy; a. The unreliable UK titration tests b. The incorrect understanding of how the Rickettsia bugs operate within the human body in itself leading to inappropriate treatment. Disclaimer This paper is written to provide information to the ME/CFS community and summarises information from Dr Jadin's work. It is purely understanding of the author who is not medically trained and no treatment should be carried out without proper medical consultation. This article can be posted/reprinted. Alistair Lowe 17th August 03 Rev3 email: alowe@... Quote Link to comment Share on other sites More sharing options...
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