The FDA has issued emergency authorisation for a dosage technique that would allow more shots of vaccine per vial.
More than 6,600 cases have been detected in the US as the Biden administration faces scrutiny on vaccine distribution.
The number of fatalities in the country has risen to three since Ghana registered its first ever Marburg virus outbreak.
The death of a young man in the southern state of Kerala is the first in Asia.
Health ministry says both victims are young men and 120 people have been hospitalised since the start of the outbreak.
About 70 percent of cases in the outbreak that began in May have been found in Europe and 25 percent in the Americas.
Advice comes days after the WHO declared the monkeypox outbreak an international health emergency amid rising cases.
WHO declares monkeypox outbreak in more than 70 countries a ‘public health emergency of international concern’.
Bill and Melinda Gates Foundation, arguably the vaccine’s biggest backer, will no longer financially support the shot.
The World Health Organization warns pandemic is not over as European countries largely abandon coronavirus restrictions.
WHO’s Europe director calls on governments and civil society ‘to scale up efforts’ to reverse the spread of the virus.
Vaccines changed the pandemic’s course. A look at other life-changing vaccines and why hesitancy undoes progress.
Richer countries and southern African nations have had double the mortality rates of poorer ones elsewhere in Africa.
Appearance of monkeypox cases in many parts of the world suggests there may have been undetected transmission, WHO says.
