Cervical Cancer Vaccine Developed in Brazil

A potential vaccine against the virus that causes cervical cancer and genital warts protects nine out of ten women, according to research published online by The Lancet Oncology.

Scientists found that the vaccine protected women against human papillomavirus types 16 and 18, which together cause about 70% of cervical cancer, and types 6 and 11, which cause 90% of genital warts.


The researchers tested the vaccine on 552 healthy women, aged 16-23, from Brazil, Europe and the United States. Half were given the vaccine and half were given a placebo.


During the trial, the women had regular cervical smears to identify potentially cancerous cells, and were tested for the presence of viral DNA.


The virus infects nearly 70% of sexually active women worldwide at some point in their life. Although screening reduces the number of women who develop cervical cancer, pre-cancerous lesions need close monitoring and often have to be removed.


Most cases of cervical cancer (80% of the estimated 370,000 new cases per year) arise in the developing world where cancer-screening programmes are rare.


Luisa Lina Villa of the Ludwig Institute for Cancer Research, São Paulo, Brazil, lead author on the article, says a vaccine could greatly reduce the incidence of cervical cancer in developing countries.


A vaccine would ideally be given to 10-13 year-old girls, who are unlikely to be sexually active and thus have probably not been exposed to the virus.


The researchers do not know how long their vaccine would protect those who are given it. But they stress that because women are at risk of human papillomavirus infection for as long as they are sexually active, protection induced by a vaccine must be long-lived.


The researchers add that a vaccine such as theirs, which protects against genital warts, could protect men as well as women.


Large-scale trials of the vaccine are underway.


Science and Development Network
www.scidev.net

Tags:

Ads

You May Also Like

Brazilian Volunteers Ready to Help Asian Tsunami Victims

According to the Counsellor-Minister of the Brazilian Embassy in Thailand, Fernando José de Carvalho ...

Brazil’s Lula Praises Press as Inevitable Medicine

In his first open-ended collective press interview since taking office two years and four ...

Armed Groups Continue Threatening Indians Evicted from Their Lands in Brazil

In the opinion of Brazil’s National Indian Foundation (FUNAI) adviser in the Brazilian midwest ...

Rain and Low Performance Hinder Brazil’s Ability to Offer Ethanol and Sugar

After promoting 3.5% expansion of offer of sugar and ethanol this year, Datagro, a ...

Only 4.5% of Brazil’s Bus Fleet Ready for Disabled

Brazil’s urban bus fleet will have to equip itself to serve the country’s more ...

How Sean Goldman’s Brazilian Family Exploited Hague’s Loopholes to Keep the Boy

The Lins e Silva and Bianchi families’ lawyers announced they will continue to dispute ...

Mercosur Needs a Parliament, Says Brazil’s Lula

During today’s visit by the President of Uruguay, Tabaré Vázquez, Brazilian President, Luiz Inácio ...

1 Million Gypsies Want Brazil to Make Room for Them and Their Culture

The Association for the Preservation of Gypsy Culture estimates that there are around one ...

Dollar Reaches Record Lows in Brazil While Brazilians Spend 44% More in Overseas Trips

For the 6th straight day the American dollar continued on Tuesday its free fall ...

And Now, Salvador?

The pace of reform is slow, and ‘grass roots’ initiatives have failed to organize ...