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.
Health researchers began sharing warnings on social media several days ago, urging members of the community to make copies of federal data before the information was removed from the CDC website.
A new strain of bird flu has been detected on a duck farm in California. The World Organisation for Animal Health reported the outbreak of the new strain, H5N9, earlier this week.