Does The Mantoux Test Work?

Tuberculosis is a major cause of distress and worry. This is because it is a disease that makes an individual suffer and also become quite weak and fatigued. The disease can also spread to other people through coughing and sneezing. The problem of tuberculosis is that it is also quite fatal. There had been some difficulties in the proper and accurate diagnosis of the disease. But the introduction of the much used Mantoux test has managed to help the doctors and physicians to find out a lot about the problem. Well, the test would involve some injections. These injections would actually be able to determine whether the person suffers from TB or not.

But does the Mantoux test really work? Let's see then. The main thing involved in this test for diagnosis is the medical solution known as tuberculin. Tuberculin actually contains a good number of strains or extracts of the different mycobacteria. These bacteria are actually responsible for tuberculosis or cowpox in cattle and other domesticated animals. A suitable quantity of tuberculin is suitably injected intradermally to the person, who is under the scanner. As found out in the clinical trials for diagnosis of TB, the skin would produce a visible reaction on the injection of the new germs or bacteria. The most significant effect would be that of indurations or hardness of a slightly raised area of the person's skin.

However, the indurations is not the sole indicator of the presence of TB bacteria in the body. The level of the indurations can easily fluctuate, increase or decrease severely due to the action of other, graver health problems. If the level of indurations crosses the 5mm mark, it would be identified as a result of a HIV infection or some residual action of a previous tuberculosis infection. Then, if the level of skin induration further crosses the scale limit of 10mm, there could be other things which would be revealed like some infections from drug use or more serious problems like diabetes and so on. So, we can see how the Mantoux test can be for the diagnosis of other problems with people as well.

There is another problem which makes the Mantoux tests rather unreliable and also not quite believable. This is the fact that the tests may produce false results and reactions. If the test result turns out to be a positive one, it is not just because of any serious infection of the Mycobacterium. It could be because of bacteria other than those which do actually cause the problem of TB. So, the person may be suffering from problems caused by other Mycobacteria and still produce a falsely positive result in the Mantoux tests. It could also be that the diagnosis of any bacterial infection be false as well. This can be when the positive results are due to the vaccination of the BCG.

When there is no skin indurations, the person is generally believed to be free from any threat of tuberculosis. The person's skin would also be believed to be free from reactions to any other disease or problem of the bacteria and germs. However, this does not necessarily mean that the person is not free from any illness or affliction. The person may not show or exhibit any reaction simply because he or she may be suffering from an immuno-deficiency problem. This problem could render the immune systems to be weak. So, for this purpose, the individual would not be able to exhibit any palpable reaction to the Mantoux test. So, with such problems, the Mantoux tests may not be really reliable.

The Importance of BCG Vaccination

When you baby is born and newly arrived in the world, it would be almost a sworn duty for you, the parent to make sure the child does not suffer any problem or disease. This is not just concerning the future of the child. It is also about starting right at the beginning and taking some modest steps to save your child from further troubles and problems. One such step is that of adequate vaccination. Vaccines will help to build  a natural immunity against the more damaging and severe diseases and afflictions. One of the important vaccinations is that of the BCG. BCG is the abbreviation for Bacillus Calmette-Guerin. This is a vaccination that will help to protect the new born child from the problem known as tuberculosis.

What is the BCG? Well, in simple terms, it is a vaccine that contains predominantly the strains of the bacterium known as mycobacterium bovis. This bacterium is found to be the principal cause behind the problem of cowpox or even tuberculosis in the cows. The bacterium had been initially found to be quite virulent when tested in human bodies. Later, French bacteriologists Albert Calmette and Camille Guerin developed a better and more advanced system of vaccination for TB. This was in 1908 when a weaker and more diluted version of the same strains of the bacteria was now being used in the BCG vaccines. Initially, disaster had been the result with many new-born babies dying of TB.

The BCG vaccination was soon proved to be quite a strong resistance against the hideous disease of tuberculosis. It has been found that the weak and benign strains of the cowpox and bovine TB bacterium will provide an ample protection against the onset of the real problem. People conducting medical diagnosis and treatment have further verified how the action of the BCG vaccines helps in sufficient protection to any person especially to young children. As of late, people in countries like India and other parts of the world have begun to get a BCG vaccine for their infants and newborn babies. But effective as the BCG is, there are still some reasons why it would not be very effective.

The BCG has so far recorded a good figure in terms of people who have been immunized against TB. However, there have been findings, which have questioned about the efficacy or effectiveness of BCG. Often, the positive results have been drastically low in some countries. In other countries, the results have been quite good. What could be the reason behind such a variance? One is the susceptibility of the people to the virus. If some weak strains of the bacterium have already started their action inside people, the new vaccination will not really work in effect. So, this is why often the BCG vaccination does not produce any good results.

There are some other reasons why the bacterium will not work or will work only under specific circumstances. There could be some genetic mutations in the bacterium. This will cause the bacterium to respond quite variably in different conditions and situations. For this reason, the BCG vaccine will not really work for some cases. In some troubled nations like India and Brazil, the BCG vaccination is important and it has been found to work in most cases due to some circumstances. However, this does not happen in nations like USA or UK. Here, the people would be treated of their TB even without the vaccination of BCG.