Researchers from the National Cancer Institute in the US suggest that a two-dose cervical cancer vaccine regimen is as effective as a three-dose one in preventing the disease.
Currently doctors suggest taking three doses of the vaccine over a period of six months, a practice that is both costly and expensive.
However the new study analyzed the results of the immunization program in Costa Rica in which more than 7,000 women took part. Over 6,000 of the women received all three doses; around 800 of them got two doses while 384 women got just one dose.
The researchers then followed up on the cases after four years and found that the level of protection against human papilloma virus strains 16 and 18 was the same among all three groups. However the researchers were quick to state that it was not yet clear whether fewer doses provided protection for the same amount of time as three-dose vaccination.
The study has been published in the Journal of National Cancer Institute.