Dozens of pages on the website of the Centers for Disease Control and Prevention focused on LGBTQ issues, HIV, racial disparities, and contraception were down on Friday.

CDC webpages that appear to have been removed include statistics on HIV among transgender people and data on health disparities among gay, lesbian, bisexual and transgender youth.

Research and basic information on subjects ranging from tuberculosis surveillance to adolescent health disappeared from federal health agency websites.

Data from an expansive federal survey on youth behavioral habits, including their sexual orientation and gender identity, have been removed from the website of the CDC.

Several US Centers for Disease Control and Prevention websites and datasets related to HIV, LGBTQ people, youth health behaviors and more have been removed after the agency was directed to comply with an executive order from President Donald Trump.

CDC webpages that appear to have been removed include statistics on HIV among transgender people and data on health disparities among gay, lesbian, bisexual and transgender youth. A database tracking behaviors that increase health risks for youth was offline.