Measles-mumps-rubella disorder

Idiopathic thrombocytopenic purpura, also referred to as immune thrombocytopenic purpura, is a bleeding disorder characterised by destruction of platelets. Antiplatelet autoantibodies are present, suggesting an autoimmune aetiology. These antibodies label the platelets for destruction by macrophages in the spleen. The condition may be acute or chronic. Acute ITP is the most common form and is found most often in children. Some cases are associated with recent viral infections and immunisations, notably the measles, mumps, rubella (MMR) vaccine. Typically, the disease is transient with no evidence of vaccine-associated recurrence. The peak incidence occurs between the ages of... 

Halsey NA, Hyman SLConference Writing Panel. Measles-mumps-rubella vaccine and autistic spectrum disorder report from the New Challenges in Childhood Immunizations Conference convened in Oak Brook. Illinois, June 12-13, 2000Pediatrics 2001 107(5) E84. 

Claims that cases of encephalopathy followed by permanent brain injury or death were due to measles immunization, submitted to the US National Vaccine Injury Compensation Program, have been reviewed (SED-13, 920) (18). A total of 403 claims of encephalopathy and/or seizure disorders after measles, measles-rubella, measles-mumps-rubella, mumps, or rubella immunization were identified during the period 1970-93. The medical records of these cases were reviewed by physicians in the compensation program to determine, if possible, the cause of injury and the classification of the findings. The inclusion criteria established by the compensation program were met by... 

Hypersensitivity. Hypersensitivity reactions, considered to be vaccine-related based on the timing and specificity of the reactions, were reported to the United States Vaccine Adverse Event Reporting System (VAERS) following vaccination for Lyme disease and subsequently evaluated (Burmester et al., 1995 Lathrop et al., 2002). Other reported immune system-related events to vaccines included rheumatoid arthritis, immune system disorders, detection of antinuclear antibodies, lupus syndrome, and lymphocytosis (Zhou et al., 2003). These were very rare events, with each condition comprising 0.2% or fewer of the total reports. Anaphylactic responses to vaccines were also rare and were estimated at less than one case per miUion administered vaccine doses (Bohlke et al., 2003). A number of studies evaluated anaphylactic responses to the measles-mumps-rubella (MMR), hepatitis B, diphtheria or tetanus vaccines with similar findings (Dobson et al., 1995 D Souza et al., 2000 Patja et al, 2000 Pool et al., 2002). However, some of the vaccine-induced hypersensitivity reactions are attributed to components of the formulation, such as gelatin or egg, rather than the antigen itself (Patja et al., 2001 Pool et al., 2002). 

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