The mother of a three-month-old baby girl diagnosed with a rare blood disorder is urging people to sign the stem cell register in a bid to save her daughter's life.

Researchers began sharing warnings on social media several days ago, urging members of the community to make copies of federal health data before the information was removed from the CDC website.

"I am reassured that the police are doing everything they can and continue to work tirelessly every day to keep our communities safe," she added, urging people to avoid the area.

Lawyers acting for three people - including campaigner Keira Bell - have written to Streeting urging him to introduce a ban as he has done for puberty blockers for children questioning their gender identity.

In addition to supporting the designation, the Xerces Society is urging the U.S.