Cervical cancer is a significant health concern for women in Malaysia, ranking as the third most common cancer among females. Without immediate action, the number of new cases is estimated to increase by as much as 64% by 2040. However, it is one of the most preventable cancers, thanks to the availability of vaccines against the Human Papillomavirus (HPV), the primary cause of cervical cancer.
Understanding Cervical Cancer and HPV
Cervical cancer develops in the cells of the cervix, the lower part of the uterus that connects to the vagina. The vast majority of cervical cancer cases are linked to persistent infection with high-risk types of HPV. Over ten types of HPV are classified as high-risk. Among them, HPV types 16 and 18 account for more than 70% of cervical cancer. HPV is a common virus that spreads through sexual contact. Among women in many industrialized countries, the lifetime probability of contracting an HPV infection is as high as 80 to 90%. Most infections clear without intervention, but some persist, increasing the risk of developing cancer.
The Power of Prevention: HPV Vaccination
The development of the HPV vaccine has revolutionized cervical cancer prevention. This vaccine protects against the HPV types most commonly responsible for cervical cancer, including HPV types 16 and 18. In Malaysia, the HPV vaccine has been integrated into the National Immunization Programme since 2010, focusing on vaccinating school girls aged 13. Following the introduction of the vaccination program, a 2022 study found that the prevalence of vaccine-targeted HPV 16 and 18 decreased by as much as 91% among women aged 18 to 24, from 4.0% in 2013-2015 to 0.4% in 2019-2020.
Why Vaccination Matters
The HPV vaccine significantly reduces the risk of developing cervical cancer. Studies have shown a substantial decrease in HPV infections and pre-cancerous cervical changes in vaccinated populations. Vaccination provides long-lasting protection against the high-risk HPV types, potentially preventing the majority of cervical cancer cases.
Beyond Vaccination: The Importance of Screening
While vaccination is a powerful tool, it is important to remember that it does not eliminate the risk of cervical cancer entirely. Regular cervical cancer screening remains essential for early detection and prevention. Screening is crucial because of the significant time lag—two to four decades—between the peak of HPV infection and the peak of cancer incidence. This represents a great opportunity for screening and early detection. However, despite the long history and wide availability of screening services, uptake remains poor in our country, ranging between 23 and 26%. In Malaysia, it is recommended that sexually active women aged 30 to 65 years should have regular cervical cancer screening. The main screening methods include:
- Cytology Tests: These can identify abnormal cells in the cervix, allowing for early intervention and treatment.
- HPV Tests: These are used to detect the presence of high-risk HPV types, further aiding in risk assessment and early detection of potential problems.
Taking Action for a Healthier Future
Cervical cancer prevention requires a two-pronged approach:
- Get Vaccinated: This reduces the risk of HPV infection, and thus cervical precancers and cancers.
- Regular Screening: This ensures that potential problems are detected early and addressed promptly.
By combining HPV vaccination with regular screening, women in Malaysia can significantly reduce their risk of cervical cancer. Let's work together to make cervical cancer a disease of the past in Malaysia!
Disclaimer: This information is for general knowledge and does not constitute medical advice. Please consult your doctor for personalized guidance and address any concerns you may have.
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