2023-05-05 12:54:59
Vaccination once morest human papillomavirus (HPV) is currently available depending on the age of the person from two or three doses. However, a new study now shows that a single dose just as effective can be.
The study involved 2,275 people aged 15 to 20 in Kenya. They were randomized to receive a single dose of a vaccine that targets two strains of HPV, a single dose of a vaccine that targets nine strains of HPV, or a control vaccine. The participants were tested regularly for three years. The effectiveness of the two-strain vaccine was 98 percent, and that of the nine-strain vaccine was 96 percent, the researchers report.
Easier and cheaper
The results might have significant implications for reducing the global rate of cervical cancer, as a single dose simplify the vaccination process would and moreover cost less caused. Cervical cancer is the fourth most common cancer in women, claiming more than 300,000 lives each year.
In December, the WHO lowered the recommended number of HPV vaccine doses to one, noting that only 15 percent of girls worldwide will be vaccinated by 2021. According to a report by the New York Times, 24 countries have already introduced the single dose. More research is expected in 2025, when a study of protection from multiple doses versus a single dose will end.
Vaccine prevents transmission
The vaccine prevents transmission of the cancer-causing strains of the sexually transmitted HPV. Vaccination is of greatest benefit when it is given before exposure to HPV has occurred. That means ideally before the first sexual contacts take place.
In Austria, the HPV vaccination has been available free of charge since February 1, 2023 from the age of 9 to the age of 21. It is then administered in a two-dose schedule. The second dose is recommended following at least six to a maximum of twelve months. Between the ages of 15 and 21, two doses are also recommended, but off-label. From the age of 21, vaccination takes place in a three-dose scheme.
1683327879
#HPV #vaccination #single #dose #protective #multiple #doses
