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|So the baby basically does have the chicken pox if she presents that rash post vaccination?
I'll let her know.
So if a doctor says the child is not contagious, does this follow suit with some doctors not knowing what is in the vaccines as well?lol
|The doctor told her that because the child has no fever, she is not contagious but if she presents a fever, then she will be contagious. How confusing?|
|I just got more information from her.. She said the child had the vaccine mar. 21st and presented the rash april 10th. That would make it different, correct?|
|We demonstrated here that an in vivo-selected virus, V-Oka-zoster, isolated from a vaccinated zoster patient has wild-type ORF 10 and that it emerged from a vaccine preparation containing both vaccine and wild-type gene 10 variants (Table 2). The isolated vaccine variant also displayed the wild-type SNPs for 9A (a structural protein), 21 (capsid assembly protein), 52 (DNA helicase/primase complex, associated protein), and 55 (probable helicase, required for viral replication), any of which might also contribute to differences in pathogenicity.|
|These findings confirm that both GlaxoSmithKline and Biken varicella vaccines are mixtures of several variants of attenuated VZV, some of which are likely to vary with respect to degree of attenuation. Detailed evaluation of every identified vaccine-specific SNP and their relative proportion in vaccine preparations is outside the range of this report and will require careful investigation. Importantly, V-Oka-zoster represents a single vaccine-related VZV strain, a variant that contained six wild-type (P-Oka) bases at identified vaccine SNPs and otherwise carried only vaccine-associated SNPs. None of these six polymorphisms reliably distinguish VZV Oka vaccine from wild-type VZV, since they represent SNPs that are variably expressed in the V-Oka-GSK mixture.|
|Vaccination against chickenpox causes a varicella-like rash in up to 5% of healthy children and 50% of children with leukemia. The vaccine may establish latency and reactivate to cause herpes zoster, albeit more rarely than wild-type virus. All vaccine preparations are composed of a mixture of varicella-zoster virus strains that show genotypic variation at several loci. We have shown, by DNA sequencing of 40 polymorphic loci, that viruses sampled from vesicles in varicella-like and herpes zoster rashes are single clones. This finding suggests that, between the time of inoculation of the vaccine and development of rash, selection of single strains occurs. The results have general implications for the pathogenesis of varicella-zoster virus.|
|Indeed, most of the novel mutations distinguishing the Oka vaccine from the more virulent parental virus have not actually become fixed. Because the parental alleles are still present, the vaccine is polymorphic at >30 loci and therefore contains a mixture of related viruses. The inoculation of >40 million patients has consequently created a highly replicated evolutionary experiment that we have used to assess the competitive ability of these different viral genotypes in a human host. Using virus recovered from rash vesicles, we show that two vaccine mutations, causing amino acid substitutions in the major transactivating protein IE62, are outcompeted by the ancestral alleles.|
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