Human papillomavirus (HPV) is a virus that has been linked to several different types of cancer in women and men.
Now a new study finds no increased risk of blood clots in women who've been vaccinated for HPV.
Researchers at Statens Serum Institute in Copenhagen, Denmark studied more than 500,000 women and girls aged 10-44.
They found no link between the HPV vaccine and blood clots during the 42 days following vaccination, which has been defined as the main risk period.
Researchers say the results should provide peace of mind to women and parents considering the HPV vaccine for their daughters.