are you in favor of giving contraceptive to teenagers?

Showing posts with label cervical cancer. Show all posts
Showing posts with label cervical cancer. Show all posts

Tuesday, October 21, 2008

Vaccination against Cervical Cancer, Genital Warts, and other HPV-Related Cancers and Diseases


Is there a vaccine to prevent HPV?

In 2006, the United States Food and Drug Administration (FDA) approved a vaccine that helps protect against diseases caused by 2 types of HPV (HPV 16 and 19) that cause 70% of all cervical cancers. The vaccine also helps to protect against 2 types of HPV (HPV 6 and 11) that cause 90% of genital warts. This quadrivalent vaccine that prevents cervical cancer, vulvar and vaginal cancers as well as genital warts is approved by the Philippine Bureau of Food and Drugs (BFAD) and is available in the Philippines. It is approved for use in children and adolescents (male and female) from 9 through 17 years old and women 18 to 45 years old.

Another vaccine that protects against HPV 16 and 18 that cause cervical cancer has been approved by the BFAD for use in the Philippines. This bivalent vaccine is approved for use in the Philippines for females from 10 years of age onwards.


How do
the HPV vaccines provide protection against cervical cancer and other HPV-related diseases?

HPV vaccines are believed to stimulate the body’s immune system to produce neutralizing antibodies that help protect against HPV in the skin cells of the genital area.

HPV vaccines are not intended to treat already existing cervical cancer and other HPV caused diseases.


Who should get vaccinated with the HPV Vaccine?


For the quadrivalent vaccine:
Girls and women ages 9 to 45 years
Boys and male adolescent ages 9 to17 years
Catch-up vaccination is recommended for females aged 13 to 26 years who have not been previously vaccinated.

For the bivalent vaccine:
Girls and women ages 10 onwards

To be most effective, HPV vaccines should be given before a person has any type of sexual contact with another person.


Can women who are already sexually active or who have experienced HPV diseases still get vaccinated?


Women who are already sexually active may still benefit from vaccination. That’s because even if a woman has been exposed to HPV, it's unlikely that she has been exposed to all virus types covered by an HPV vaccine. So the vaccine could still help protect against HPV types the woman hasn't been exposed to.

How are the HPV vaccines administered?

The Quadrivalent HPV vaccine administration schedule involves three doses administered intramuscularly within 6 months
(day 1, month 2, and month 6).


The Bivalent HPV vaccine administration involves three doses administered intramuscularly within 6 months
(day 1, month 1, and month 6)



Why is Vaccination at a Young Age Recommended?


HPV vaccination is most effective when given during childhood or adolescence, i.e. before sexual debut, when HPV infection risk is nil or at its lowest.

Vaccination at a young age is also ideal because this is when the immune system is at its strongest and, therefore, will mount a robust response to the vaccine.


Is vaccination with the HPV vaccines safe?


Appropriateness of HPV vaccination for each patient should always be determined by a doctor. Vaccinations should be upon doctor's prescription.

HPV vaccines are contraindicated to those who are hypersensitive to the active substances or to any of the excipients of the vaccine.

Always tell the doctor if the person getting vaccinated has any severe allergies.

Pregnant women should not get the vaccine.

Particular Safety Data for Each Vaccine:

For the Quadrivalent Vaccine:

Individuals exhibiting hypersensitivity to the active substances or to any of the excipients of the vaccine should not get the vaccine.
Individuals who develop symptoms indicative of hypersensitivity after receiving a dose of the vaccine should not receive further doses of the vaccine.

Women who are breastfeeding may get the vaccine.

Common adverse events include: pyrexia, pain in extremity, and erythema, pain, swelling and pruritus at the injection site

For the Bivalent Vaccine:

The effect on breastfed infants of the administration of the bivalent vaccine to their mothers has not been evaluated in clinical studies. The bivalent vaccine should only be used during breastfeeding when possible advantages outweigh the possible risks.

Common adverse events include: headache, GI including nausea, vomiting, diarrhea and abdominal pain, itching, pruritus, rash, urticaria, myalgia and arthral gia, pain redness and swelling at the injection site, fatigue and fever (=38°C).

For more information, please refer to the American Cancer Society (ACS) Frequently Asked Questions (FAQs).

Sunday, September 7, 2008

HPV or Human Pappiloma Virus??

Cervical cancer is caused by a virus. This common and highly infectious virus is the human papillomavirus or HPV.

What is HPV?

• Over 100 types of HPV have been identified. Most are relatively harmless, causing skin warts (kulugo) commonly found on the hands and feet.

• In most cases, HPV is cleared by the body’s immune system. In people who do not clear the virus, however, the health consequences depend on the type of HPV involved.

• “Low-risk” types (6 and 11) can cause genital warts and abnormal cervical changes that result in abnormal Pap tests

• “High-risk” types (16 and 18) can cause cervical, vulvar, vaginal, penile, and anal cancers and abnormal cervical changes that sometimes lead to cancer

• HPV 6 and 11 cause approximately 90% of genital warts cases.

• HPV 16 and 18 cause approximately 70% of cervical cancer cases.

• At least 50% of sexually-active people will get genital HPV infection. Most will not know that they are infected. (Based on US data)

• About 10% of women in the general population have cervical HPV infection at a given time (Based on US data)


How is HPV infection spread?

• HPV infection is spread mainly by direct genital contact during vaginal or anal sex.

• Other modes of transmission:

- Hand-genital transmission
- Oral-genital transmission

• Very rarely, a pregnant woman with genital HPV can pass HPV to her baby during vaginal delivery. In these cases, the child may develop warts in the throat or voice box – a condition called recurrent respiratory papillomatosis (RRP).

Who is at risk for HPV infection?

Those who:

• Have many sex partners
• Are younger than 25 years of age
• Have started sexual intercourse at age 16 or younger
• Have a partner who has had several different partners

A person who has had sex with only one partner can get HPV if that partner already has the virus. HPV can also be picked up from having sex with an infected person at any age.

What are the Diseases Caused by HPV?

HPV can lead to Cervical Cancer and Other Cancers

• Most HPV infections do not progress to cancer. However, those that do cause considerable suffering among patients and their family.

Half of women afflicted by cervical cancer are between 35 to 55 years of age—the peak years of productivity. Many were probably exposed to one of the high-risk HPV types during their teens or 20s.

Virtually 100% of cervical cancer cases worldwide (with almost 500,000 new cases and 270,000 deaths each year) are caused by HPV.

Approximately 40% of vulvar and vaginal cancer cases are caused by HPV.

Approximately 90% of anal cancer cases are caused by HPV.

Approximately 40% of penile cancer cases are caused by HPV.

Approximately 12% of oropharynx (tongue and tonsils) cancer cases and 3% of mouth cancer cases are caused by HPV.

HPV causes Genital Warts

Genital warts are the most easily-recognized sign of genital HPV infection. They appear within weeks or months after infection, usually within 3 months.

Two out of three individuals who have sex with a partner with genital warts will develop warts.

Genital warts appear soft and moist, flesh-colored, in clusters, smooth and flat, or raised with a rough texture.

• In women, genital warts develop on the vulva, cervix, vagina and anus. In men, genital warts can appear around the anus or on the penis, scrotum, groin, or thighs.

HPV causes RRP

Recurrent respiratory papillomatosis (RRP) is a rare condition in which warty growths develop in the larynx (voice box) of children and young adults. If not surgically removed, the warts can obstruct the airway and cause asphyxiation.

Because of its recurrent nature, RRP may require surgery under general anesthesia as often as every few weeks.

Gallery




Healthy Cervix
Cervical Cancer
CIN







Genital Warts Female
Genital Warts in
Female







Genital Warts in Male
genital warts in male