The US Food and Drug Administration (FDA) had revised the ban on gay and bi men giving blood in response to the coronavirus crisis.
Until now, men who have sex with men had to wait 12 months after the last time they had sex before donating blood. The FDA has now reduced this to three months, in line with many other countries.
It comes as the US calls for people to donate blood to help with a shortage. Regular donors are not always available to give blood due to self-isolating for COVID-19 or