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Weil Felix Test for Rickettsial Diseases: Introduction, Principle, Procedure, Result Interpretation and Keynotes
Introduction of Weil Felix Test for Rickettsial Diseases Weil Felix test is a serological assay that is used for the diagnosis of rickettsial infection by indicating immunoglobulins/antibodies in the serum. In this test, OX -19, OX -2 strain of Proteus vulgaris, and OX-K of P. mirabilis are used instead of specific rickettsial pathogens as antigens. This test was developed from the observation that certain strains of Proteus species isolated from the patient's urine with epidemic typhus were...
Respiratory Syncytial Virus: Introduction, Pathogenicity, Lab Diagnosis, and Treatment
Introduction of Respiratory Syncytial Virus Respiratory syncytial virus (RSV) is a common respiratory virus that normally causes mild, cold-like symptoms. Most of the sufferers recover in a week or two, but RSV can be serious, particularly for infants and older adults. Some features of this virus are- belongs to the family Paramyxoviridae Enveloped RNA virus Pleomorphic with helical capsid symmetry 90-130 nm in size Transmission and pathogenicity of RSV Person to person transmission is mainly by...
Motility Test: Introduction, Principle, Composition, Procedure, Result Interpretation and keynotes
Introduction of Motility Test The motility test of bacteria can be tested using SIM medium, MIU medium, liquid medium like peptone water, nutrient broth, tryptone broth, BHI broth, and direct from the specimen (feces) hanging drop preparation. MIU stands for Motility, Indole, and Urease. In this chapter, the motility test of bacteria can be discussed in detail using MIU. The test is useful for the identification of gram-negative bacilli especially bacteria of Enterobacteriaceae. Three tests in a single...