US health officials announced they have approved a new procedure for injecting the monkeypox vaccine that will allow more people to be vaccinated with the same amount of product, as the country is running short of doses, according to AFP.

"This will increase the total number of doses available for years, by up to fivefold," said Dr Robert Califf, the commissioner of the US Food and Drug Administration.

Xavier Becerra, US Health and Human Services Secretary, said, "Today we have made more than 1.1 million vaccine doses available throughout the country, and we've delivered more than 620,000 of those doses. We've also deployed more than 15,000 courses of the TPOXX treatment, and have increased the country's capacity to administer tests on a weekly basis to some 80,000."

Califf said, "Today, the FDA has issued an Emergency Use Authorization or EUA allowing health care providers to use an alternative dosing regimen of the Jynneos vaccine. This will increase the total number of doses available for years, by up to fivefold. The EUA also allows for use of the vaccine on individuals younger than 18 years of age."

Rochelle Walensky, Director of the Centers for Disease Control and Prevention (CDC), said, "As Dr Califf (FDA Commissioner Robert Califf, ed) described, this strategy would change the method of administration for the Jynneos vaccine, from subcutaneous to intradermal, to allow vaccine providers to use an existing one dose vial of the vaccine to administer a total of up to five separate doses."