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Detection of the rubella virus via RT-PCR [19] Detection of rubella-specific IgM antibody [19] Detection of infant rubella-specific IgG antibody [19] at higher levels (and persists for a longer time) than expected for passive maternal transmission; Isolation of the rubella virus by nasal, blood, throat, urine, or cerebrospinal fluid specimens
Clinically, measured IgG antibody levels are generally considered to be indicative of an individual's immune status to particular pathogens. A common example of this practice are titers drawn to demonstrate serologic immunity to measles, mumps, and rubella (MMR), hepatitis B virus, and varicella (chickenpox), among others. [19]
Rubella virus specific IgM antibodies are present in people recently infected by rubella virus, but these antibodies can persist for over a year, and a positive test result needs to be interpreted with caution. [25] The presence of these antibodies along with, or a short time after, the characteristic rash confirms the diagnosis. [26]
The genome encodes several non-coding RNA structures; among them is the rubella virus 3' cis-acting element, which contains multiple stem-loops, one of which has been found to be essential for viral replication. [12] The only significant region of homology between rubella and the alphaviruses is located at the NH2 terminus of non structural ...
IgG deficiency is a form of dysgammaglobulinemia where the proportional levels of the IgG isotype are reduced relative to other immunoglobulin isotypes. IgG deficiency is often found in children as transient hypogammaglobulinemia of infancy , which may occur with or without additional decreases in IgA or IgM .
For many viruses, antibodies and especially neutralizing antibodies serve as a correlate of immunity. Pregnant women, for example, are routinely screened in the UK for rubella antibodies to confirm their immunity, which can cause serious congenital abnormalities in their children.
Immunoglobulin therapy is the use of a mixture of antibodies (normal human immunoglobulin) to treat several health conditions. [13] [14] These conditions include primary immunodeficiency, immune thrombocytopenic purpura, chronic inflammatory demyelinating polyneuropathy, Kawasaki disease, certain cases of HIV/AIDS and measles, Guillain–Barré syndrome, and certain other infections when a ...
Since these antibodies sometimes destroy red blood cells they can cause anemia; this test can help clarify the condition. The indirect Coombs test detects antibodies that are floating freely in the blood. [1] These antibodies could act against certain red blood cells; the test can be carried out to diagnose reactions to a blood transfusion. [1]