Human papilloma virus: vitamin D more protective than vaccine?

There is much talk about convincing women to under vaccination against the human papilloma virus (HPV) to prevent cervical cancer but little about prevention.  In a recently published study, severely vitamin D deficient women were found to be almost three times at greater risk for papilloma virus infection compared to women whose vitamin D levels were adequate.  [Journal Infectious Diseases June 15, 2016]  The vaccine for HPV does not protect against all strains of the virus whereas vitamin D does.