HealthPapillomavirus: how does vaccination in Australia affect cervical cancer?

Papillomavirus: how does vaccination in Australia affect cervical cancer?

The government wants to stem the scourge of papillomavirus, which causes 6,000 cases of cancer a year, half of which are cervical cancer, by more widely vaccinating teenagers. Therefore, this campaign will be offered at the beginning of the 2023 school year to all Year 5 student volunteers.

This is directly inspired by what Australia did, which introduced universal human papillomavirus (HPV) vaccination for girls in 2007 and then for boys in 2013. Vaccination coverage in the country is very high, with 67% of 15-year-olds and 78% of adolescent girls receiving three doses. On social networks, the comments after Emmanuel Macron’s statement also inform about the policy pursued by this country in Oceania. Cases of cervical cancer, which affects women in their 50s, have even dropped, according to netizens. Relativity effect. As cervical cancer continued to rise for a decade, all ages combined increased from 757 cases diagnosed in 2006 to 888 cases in 2016, according to Global Cancer Observatory.

But this is not related to vaccination and this does not mean that the campaign does not work, quite the contrary. “There is no dispute about the effectiveness of vaccination against papillomavirus. One thing is clear: vaccination reduces the incidence of cancer by 90%.r”, excerpt with TF1info Dr. Lukas Spindler, gastroenterologist and proctologist at the Saint-Joseph hospital in Paris.

So how is this explained? In reality, the benefits of a cervical cancer vaccination campaign cannot be measured immediately.. “For this type of cancer, the time between HPV infection and the appearance of cancerous lesions can take 10 to 20 years.” looks like a specialist. “Cervical cancer in young women is rare, the incidence increases from the age of 30”further highlight the French Public Health (SPF) and National Cancer Institute in the observation report. “Therefore, the impact of vaccination on cervical cancer will become noticeable when the first cohorts of girls vaccinated during pre-adolescence reach the age of initiation of cervical cancer screening.”those. from 2020-2025 for a campaign that started in 2007.

The decline in cervical cancer is only noticeable between 2020 and 2025 in countries that introduced the vaccination of adolescent girls in 2007 – French Public Health

On the other hand, other signs of vaccination effectiveness are detected earlier, such as a decrease in human papillomavirus infection or precancerous lesions of the cervix. And they are very reassuring to the Australian population. So, infections detected in smears of young women aged 18 to 24 years have practically disappeared in the Australian states of Victoria and New South Wales, declining from 22.7% to 1.5% in ten years, from 2005-2007 to 2015. ..

“The rate of detection of precancerous lesions of the cervix among the women examined also dropped sharply between 2004-2006 and 2016, from 13.6 to 3.9 per 1,000 women under the age of 20.”, say the French organizations from Australia, studies conducted in real life. These encouraging results give the Australian authorities hope for the elimination of cervical cancer in the near future, while the first young women vaccinated in 2007 are just beginning to be screened.

Do you want to ask us questions or provide information that you do not believe is reliable? Feel free to write to us at lesverifié[email protected]. You can also find us on Twitter: our team is there on @verif_TF1LCI.

Caroline Kevren

Source: TF1


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