Right, so the Daily Express run an article on the HPV vaccine,
here saying :
Quote:
THE cervical cancer vaccine may be riskier and more deadly than the cancer it is designed to prevent, a leading expert who developed the drug has warned.
hmmm I thought, that's rather interesting.
So I pop on to pubmed, the search engine for the emdical journals and have a look for her.
Well, it appears that the Express's expert, Dr Harper has pubished a paper here:
Public Health Genomics. 2009;12(5-6):319-30. Epub 2009 Aug 11.
The abstract is this:
Quote:
"Cervarix® and Gardasil®, 2 human papillomavirus (HPV) vaccines, have been approved and implemented globally in young adolescent women with the hope of reducing the incidence of cervical cancer several decades hence. This program is dependent on the concept of 'immunobridging': antibody titers generated in young adolescents that are the same or higher than generated in HPV-naive 16- to 26-year-old women, the population in which efficacy is proven. Likewise, realizing a decline in cervical cancer from young adolescent female vaccination depends on the duration of vaccine efficacy, and the population coverage reached. While we patiently wait for results from our young adolescent vaccination programs, newly released data indicates that the immunogenicity and efficacy of the vaccines for young adult women with prior HPV exposure is equal or superior to that seen for young adolescents. This same concept of immunobridging supported by limited efficacy data offers the potential to reduce cervical cancer precursors within just a few years in our young sexually active adult women, a population secondary to our young adolescents. The HPV vaccines are not therapeutic. Neither vaccine will inhibit an already HPV-infected basal epithelial cell which continues to transform differentiated epithelial layers into cervical dysplasias. There is a clinical hope, though, already supported by early data, that the vaccines are capable of neutralizing HPV virions in host tissues from both auto-inoculated infections and infections in other organs than the cervix, thereby making it possible for these vaccines to prevent less common HPV-associated cancers of the penis, vagina, vulva, anus, oral cavity and oro-pharynx. Both vaccines have been shown to be generally safe in the phase II and phase III randomized controlled trials over 3-6.4 years. Post-marketing surveillance of Cervarix and Gardasil continues to show that they are safe for most women despite rarely occurring serious events."
and also, last year,
Gynecol Oncol. 2008 Sep;110(3 Suppl 1):S11-7. Epub 2008 Jul 22.Click here to read
She publishes:
Quote:
"Cervical cancer of both squamous and adenocarcinoma types is considered virtually 100% attributable to human papillomavirus (HPV) infection. HPV-16 and -18 are the predominant types worldwide accounting for over 70% of all cervical cancer. Persistent oncogenic HPV infection has been confirmed as one key determinant in the development of cervical precancer (cervical intraepithelial neoplasia [CIN] 2+) and cervical cancer. The impact of prophylactic HPV vaccination on the reduction of virological and cytohistological outcomes related to HPV-16 and -18 has been evaluated in clinical trials with the HPV-16/18 AS04-adjuvanted cervical cancer vaccine (Cervarix™) through a Phase IIb study with a long-term follow-up of efficacy up to 5.5 years, and a large Phase III trial in women 15–25 years of age. These individual studies include populations with different underlying risk factors, each of which shows high efficacy against both HPV-16/18 persistent infections and CIN2+. When the two studies are combined and the respective populations are evaluated, vaccine efficacy against HPV-16 and -18-related CIN2+ remains at 100%. As this vaccine is used over time in universal prophylactic HPV-16/18 vaccination of girls and women, reductions in cervical cancers at both the individual and public health levels will be appreciated."
Fair annoyed me that has.
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