The administration is committing an additional $306 million toward battling the virus, and will distribute the money before President-elect Donald J. Trump takes office.

The Biden administration, in a final push to shore up the nation’s pandemic preparedness infrastructure before President-elect Donald J. Trump takes office, announced on Thursday that it is committing an additional $306 million toward efforts to ward off a potential outbreak of bird flu in humans.

Federal health officials have been keeping a close eye on H5N1, a strain of avian influenza that is highly contagious and lethal to chickens, and has spread to cattle. The virus has not yet demonstrated that it can spread efficiently among people.

The Centers for Disease Control and Prevention says that the current risk to humans remains low, and that pasteurized milk products remain safe to consume. But should human-to-human transmission become commonplace, experts fear a pandemic that could be far more deadly than Covid-19.

The Biden administration has already spent about $1.8 billion battling bird flu since the spring of last year; $1.5 billion of that was spent by the federal Agriculture Department on fighting the virus among animals. The remainder has been spent by the Health and Human Services Department on efforts to protect people, according to federal officials.

The additional $306 million will go toward improving hospital preparedness, early stage research on therapeutics, diagnostics and vaccines. About $103 million will help maintain state and local efforts to track and test people exposed to infected animals, and for outreach to livestock workers and others at high risk.

The funds will be distributed in the next two weeks, Dr. Paul Friedrichs, the director of the White House Office of Pandemic Preparedness and Response Policy, said in an interview Thursday.

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