Human Papilloma Virus Vaccine: Gardasil
BY EVA CHAN
Gardasil. We’ve all heard it on television commercials, from our doctors or from our friends talking about it. So what is it? Gardasil is a cervical cancer vaccine for protection against four major strains of the sexually transmitted human papilloma virus (HPV).
HPV is a DNA-based virus and is estimated to be one of the most common sexually transmitted infections (STIs) in Canada. Many types of HPV have been identified, with some leading to cancer and others to ano-genital warts. Seventy-five percent of Canadians will have some form of HPV during their lifetime. This is so high because you may become in contact with the virus, but it will stay dormant and active in your body system forever. In addition, HPV is transmitted by skin-to-skin contact and thrives in warm, moist areas, such as the genitals, thighs, groin and anus.
There are over 100 types strains of HPV and about 35 types of HPV infect the genitals and reproductive organs. Within these 35, there are high-risk and low-risk types of HPV. Gardasil protects against infection with two high risk types of HPV (Type 16 and 18) and two low risk types (Type 6 and 11). HPV types 16 and 18 cause approximately 70% of cervical cancers while HPV types 6 and 11 cause approximately 90% of ano-genital warts.
Gardasil is given as 3 injections into the upper arm or thigh muscle over a period of 6 months. The second dose is given 2 months after the first dose, and the third dose is given 6 months after the first dose. The injections are given by a health care professional in a clinic or similar setting. The vaccine does not contain the virus, but only particles from part of the virus. Also, the vaccine does not contain any preservative or antibiotics.
So is this vaccine right for everyone? Gardasil is for girls and young women ages 9 to 26. It is recommended for girls and women before their first sexual encounter. But keep in mind that woman who have taken the HPV vaccine is not protect against diseases caused by other HPV types not protected by this vaccine.
To reduce your risks of HPV, barrier methods of protection (such as condoms) are still necessary to prevent HIV/AIDS and other types of infection not prevented by the HPV vaccine during sexual activity. Regular Pap screening is still required to check for cervical abnormalities. This vaccine is not suitable for woman who has already been exposed to the HPV virus type that the vaccine is preventing.
The vaccine is also very expensive, at approximately $405 Canadian per woman for the three injections. The side effects include pain, swelling, itching, and redness at the injection site, fever, nausea, dizziness, vomiting, and fainting.
If you are interested in this vaccine, speak to your doctor to see if it is appropriate for you. If you are worried about HPV, consult a doctor and get a Pap screening. HPV can be quickly detected through routine pap tests. Studies are currently being done to develop a vaccine for males.
If you want more information, check the following source:
Gardasil:
http://www.gardasil.com/