What is proteus skin#
What is proteus professional#

(2006) Relevance of Weil-Felix Test in Diagnosis of Scrub Typhus in India.

Mahajan SK, R Kashyap, A Kanga, V Sharma, BS Prasher and LS Pal.

Transactions of the Royal Society of Tropical Medicine and Hygiene.

Felix A (1944) Technique and interpretation of the Weil-Felix test in typhus fever.(1984) Unique Developmental Characteristics of the Swarm and Short Cells of Proteus vulgaris and Proteus mirabilis. Cohen SS (1945) The chemical alteration of a bacterial surface, with special reference to the agglutination of B.Values вЂ‹вЂ‹between 1:40 and 1:80 are considered negative, while results between 1: 160 (in endemic or epidemic areas) and 1: 320 (in isolated areas) can be considered positive. The results appear to be favorably comparable to those obtained in agglutination tube tests. The slide test is designed for mass examinations under field conditions.

The result is read with the naked eye according to the intensity and speed of the agglutination. In this case, a drop of blood from the patient's finger is applied to the slide and a drop of concentrated and preserved solution of Proteus vulgaris OX-19. There is also a variant in a slide (a rectangular glass sheet measuring 75 by 25 mm and approximately 1 mm thick). In complete agglutination, a precipitate separates and the supernatant should be totally clear. In basic terms, the test consists of the following steps:ДЎ- The serum is extracted from the blood of the patient with rickettsiosis by centrifugation.Дў- Prepare an extract of fresh cells from Proteus vulgaris OX-19 (or the commercially ready antigen is used).ДЈ- In an agglutination tube, prepare a mixture of 0.5 ml of serum and 0.5 ml of antigen, in a battery of dilutions.Д¤- They are incubated at 37 В° C for two hours and left in the refrigerator until the next day at 8-10 В° C.ДҐ- The degree of agglutination that occurs is recorded.

What is proteus professional#

In addition to other general information such as trips to endemic areas, contact with reservoir animals, background of camping and professional environment. That is, the patient's symptoms and whether he comes from a region where typhus is known to exist must be taken into account. The test must be interpreted in the correct clinical context. However, the use of the Weil-Felix test is acceptable in conditions where definitive investigations are not possible. The Weil-Felix agglutination test is not very sensitive and can frequently show false positives and is therefore not considered a reliable test. The only exception is the species Rickettsia akari. The Weil-Felix (WF) test is based on the fact that various species of Proteus have receptors for antibodies of the immune system, equal to those present in members of the genus Rickettsia. Neurological complications and even coma can occur.

What is proteus skin#

This rash is maculopapular (discolored patches of skin and small bumps). On the fifth day the rash appears (skin rash all over the body except the soles of the feet and palms). Typhus symptoms include severe headaches, sustained high fever and prostration, bronchial disease, cardiovascular disorders, bleeding at different levels, mental confusion, and stupor. The infected person maintains the bacteria for life, which can multiply under conditions of depressed immune system. This bacteria is transmitted by the louse ( Pediculus humanus), which contracts it by biting a sick person, being able to infect a healthy host by defecating on its skin at the time of the bite. Typhus is a disease caused by bacteria Rickettsia prowazekii, an obligate intracellular parasite. This is because both organisms have similar antigen groups. If we take serum from that person's blood and mix it with Proteus OX19, a precipitate or agglutination will be obtained. Therefore, if a person is sick with typhus, his body produces antibodies that react to the antigens of Rickettsia prowazekii. Meanwhile, the cells of Proteus OX-19 react in the serum of people infected with the species of Rickettsia that cause typhus and Rocky Mountain spotted fever. The OX-2 strain reacts with the species of Rickettsia, a genus of bacteria that cause spotted or spotted fevers (with the exception of Rocky Mountain spotted fever). Variants of the somatic O antigen present in this bacterium are OX-2, OX-3 and OX-19. Proteus vulgaris it has an antigenic structure formed by a somatic O antigen, a flagellar H and a superficial K antigen. An antigen is a molecule foreign to the body that the system recognizes as a threat, generating an immune response in the form of antibodies. Proteus OX-19 is one of the somatic antigens produced by the bacteria Proteus vulgaris. An antigen i a molecule foreign to the body that the ytem recognize a a threat, generating an immune repone in the for Proteu OX-19 i one of the omatic antigen produced by the bacteria Proteu vulgari. Proteus OX-19: origin, medical utility, typhus, diagnosis