A Journalist who views HK and thinks critically
HPV (Human papillomavirus) is a kind of DNA papillomavirus that is capable of infecting human in keratinocytes of the skin or mucous membranes. While 70 of more than 100 types of known HPV cause no symptoms in most people, 30 types HPV would still lead to cancers of cervix, vulva, vagina, penis, oropharynx and anus. According to the website of HPV HK, more than 80% women who have sexual experiences would infect HPV. Meanwhile, the injection of Vaccine of HPV is considered to be an effective way to avoid the virus (prevention of 70% Cervical Cancer), and over 100 million people in 123 countries and territories were being injection.
In the market, there are only two certified types of Vaccine of HPV i.e. Gardasil produced by Merck and Cervarix produced by GlaxoSmithKline. The former one could prevent the HPV6, 11, 16, 18; however, the last one only prevents HPV16, 18. The length in time of Cervarix’s protection is 20 years, 11 years longer than Gardasil. In Australia, the cases of precancerous lesions of the cervix reduce 50% after 4 years promotion. Furthermore, the cases of genital warts in Australia nearly disappear.
According to the U.S CDC, during June of 2006 to December of 2008, 23 million Gardasil were used. Among 12424 cases of adverse reaction were reported (Incident rate of 53.9 cases/ 100,000), including 772 cases (6.2%) in seriously adverse reaction and 32 death cases. Both syncope and venous thrombosis are higher than other kinds of vaccine. In Britain, Cervarix drugs were used (It has been changed to Gardasil now) and 1340 cases adverse reaction were reported. Some doctors argued that only 2%-3% women would have cervical cancer after infecting HPV. Even so, there are five years for the women to check it out during the period of precancerous lesions.