Bird flu could be “evolving under the radar” because of failures to monitor and control the spread of the virus, a leading pandemic scientist has warned.
Dr Thomas Peacock, a specialist in animal-to-human spread of viruses at The Pirbright Institute, said H5N1 could be transmitting undetected in the US because of “months of missing data” that leaves researchers, vets and authorities in the dark.
The strain is currently spreading between US dairy cows after crossing over from wild birds earlier in the year.
Four workers on cattle farms have also become infected and the Centers for Disease Control (CDC) recently reported the first human case with no known contact with animals.
Image: This electron microscope image shows avian influenza A virus (bird flu) particles, red/yellow, grown in cultured cells. Pic: CDC, NIAID via AP
Symptoms have been mild in all the people infected so far.
Dr Peacock said: “What keeps scientists up at night is the possibility of unseen chains of transmission silently spreading through farm worker barracks, swine barns, or developing countries, evolving under the radar because testing criteria are narrow, government authorities are feared, or resources are thin.”
In the US there is only mandatory reporting of the disease in poultry, not mammals. The Department of Agriculture only requires testing on lactating cattle before they are moved across state borders.
H5N1 has also spread in fur farms in Europe and globally in wild marine mammals.
Writing in the journal Nature, Dr Peacock and colleagues at The Pirbright Institute say the prospect of the highly pathogenic strain of bird flu becoming permanently established in Europe and the Americas is a “turning point”.
“The severity of a future H5N1 pandemic remains unclear,” he said.
“Recent human infections with H5N1 (in the United States) have a substantially lower case fatality rate compared to prior H5N1 outbreak in Asia, where half of people with reported infections died.
“The lack of severity in US cases may be due to infection through the eye, rather than through viral pneumonia in the lung.”
The CDC said the current public health risk is low, but it is closely monitoring people exposed to infected animals.
One of the National Guard members shot in Washington DC on Wednesday has died from her injuries, Donald Trump has said.
The president said 20-year-old Sarah Beckstrom had “just passed away” and called her a “highly respected” and “magnificent person”.
The other person who was shot, Andrew Wolfe, 24, is in a critical condition. The pair were ambushed while patrolling near the White House.
Ms Beckstrom’s father had earlier told The New York Times she was unlikely to survive and he was “holding her hand”.
Image: Sarah Beckstrom. Pic: Reuters
The suspected gunman, Afghan national Rahmanullah Lakanwal, 29, is in a serious condition, Mr Trump told reporters.
He drove thousands of miles from his home in Washington state to carry out the attack with a powerful Magnum revolver, according to US attorney Jeanine Pirro.
Lakanwal is said to have worked in a CIA-backed Afghan army unit before coming to the US in 2021 under a resettlement programme designed to protect people from Taliban reprisals.
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His asylum application was passed this year.
Investigators are treating it as terrorism and searched multiple properties on Thursday, including one linked to Lankanwal in Washington state, where the FBI seized electronic devices and interviewed relatives.
Lakanwal has a wife and five children family, but Washington DC police said he appeared to have acted alone.
Ms Beckstrom, part of the West Virginia National Guard, had been deployed as part of the president’s plan to clamp down on what he says are high levels of crime and illegal immigration in some US cities.
Mr Trump ordered 500 extra troops into the capital after the shooting, joining about 2,200 already there.
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The suspect who opened fire on two National Guard soldiers just blocks from the White House is an Afghan national who worked with a CIA-backed unit in Afghanistan, according to officials.
He worked with “the US government, including CIA, as a member of a partner force in Kandahar” during the US-led war in the country, CIA director John Ratcliffe has said.
The suspect, who has been pictured for the first time, was wounded in an exchange of gunfire before he was arrested.
He was identified by the Department of Homeland Security as Rahmanullah Lakanwal, 29.
Image: Rahmanullah Lakanwal. Pic: Reuters
Attorney general Pam Bondi said the US government plans to bring terrorism charges against the gunman and seek a sentence of life in prison “at a minimum”.
“A lone gunman opened fire without provocation, ambush style, armed with a .357 Smith & Wesson revolver,” she told reporters.
US Attorney for Washington DC Jeanine Pirro identified the two wounded Guard members as Sarah Beckstrom, 20, and Andrew Wolfe, 24.
She said they had been sworn in as National Guard members fewer than 24 hours before the shooting.
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Image: Andrew Wolfe and Sarah Beckstrom. Pic: Reuters
Ms Pirro said the suspect ambushed them while they were patrolling near the White House. He shot one Guardsman who fell and then shot again before firing multiple times at the second Guardsman with the Magnum handgun.
Numerous electronic devices seized from suspect’s home
The suspect “drove his vehicle cross-country from the state of Washington with the intended target of coming to our nation’s capital,” Ms Pirro said.
The FBI searched multiple properties in Washington state and San Diego on Thursday in what officials said was a terrorism probe into the DC shooting.
Investigators seized numerous electronic devices from the suspect’s house in Washington state, including cellphones, laptops, and iPads, FBI director Kash Patel told a news conference.
According to the Department of Homeland Security, Lakanwal entered the US in 2021 under Operation Allies Welcome, a Biden-era program to resettle Afghans who assisted the US during the war and feared reprisals from the Taliban after the withdrawal.
An unnamed relative of the suspect has said that Lakanwal served in the Afghan army for 10 years alongside US Special Forces troops and was stationed in Kandahar for part of that time.
The relative also said Lakanwal was working for online retail giant Amazon.com the last time they spoke several months ago, according to Sky’s US partner NBC News.
A Trump administration official who spoke on condition of anonymity has said that Lakanwal applied for asylum in December 2024 and was approved on 23 April of this year.
Lakanwal had no known criminal history, the official said.
US President Donald Trump, who was at his resort in Florida at the time of the attack, released a prerecorded video statement late on Wednesday calling the shooting “an act of evil, an act of hatred and an act of terror”.
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Trump has called for every Afghan national who entered the US under Biden to be investigated following the shooting of two National Guard troops.
He said his administration would “re-examine” all Afghans who arrived in the US during the presidency of his predecessor, Joe Biden.
The US Citizenship and Immigration Services agency has said it has halted processing of all immigration requests relating to Afghan nationals indefinitely, “pending further review of security and vetting protocols”.
In the wake of Wednesday’s shooting, Defence Secretary Pete Hegseth said the president requested an additional 500 National Guard troops to bolster the more than 2,000 already deployed in the nation’s capital.
In August, Trump ordered the National Guard to the city to combat rising crime, a move that drew objections from District of Columbia officials who argued in court that it violated local authority.
Two military personnel have been shot near the White House in Washington DC.
A suspect has been taken into custody and the area secured, police said.
The White House was placed into lockdown, while US President Donald Trump is away in Florida.
Mr Trump posted on his Truth Social platform to say the two National Guard members had been “critically wounded”, adding that the “animal” that shot them “is also severely wounded, but regardless, will pay a very steep price”.
Both guardsmen were shot in the head, according to Sky’s US partner network, NBC News, quoting an official and a senior official directly briefed on the investigation.
The shooting will be investigated by the FBI as a possible act of terror, two senior US law enforcement officials told NBC.
The suspect, who used a handgun in the attack, has been initially identified as an Afghan national, the officials said.
But investigators are still trying to confirm all of the individual’s details.
West Virginia’s governor initially said both victims were members of his state’s National Guard and had died from their injuries – but later posted to say there were “conflicting reports about the condition of our two Guard members”.
Patrick Morrisey had said: “These brave West Virginians lost their lives in the service of their country.”
Image: Pic: AP
FBI director Kash Patel said two National Guard members were “brazenly attacked in a horrendous act of violence”.
At a news conference he clarified they were in a “critical condition”.
Jeff Carroll, chief of the metropolitan police department in the area, said the attack began at 2.15pm local time (7.15pm in the UK) while National Guard members were on “high visibility patrols in the area”.
He said: “A suspect came around the corner, raised his arm with a firearm and discharged it at the National Guard.
“The National Guard members were… able to – after some back and forth – able to subdue the individual and bring them into custody.”
Washington DC mayor Muriel Bowser called the attack a “targeted shooting”.
Image: Pics: AP
Social media footage showed first responders attempting CPR on one of the soldiers as they treated the other on a pavement covered in glass.
Nearby other officers could be seen restraining an individual on the ground.
Image: Emergency personnel cordon off an area near where the National Guard soldiers were shot. Pics: AP
The scene has been cordoned off by police tape, while agents from the US Secret Service and Bureau of Alcohol, Tobacco, Firearms and Explosives were on the scene, as National Guard troops stood sentry nearby. The FBI was also on the scene, the agency’s director said.
The Joint DC Task Force confirmed it was responding to an incident in the vicinity of the White House.
The DC Police Department posted on X: “Critical Incident: MPD is on the scene of a shooting at 17th and I Street, NW. Please avoid the area.”
In an update, the force said: “The scene is secured. One suspect is in custody.”
White House press secretary Karoline Leavitt said: “The White House is aware and actively monitoring this tragic situation.
“The president has been briefed.”
Mr Trump was at his resort in Palm Beach ahead of the Thanksgiving holiday, while US vice president JD Vance was in Kentucky.
US defence secretary Pete Hegseth said Mr Trump had asked for 500 more troops to be deployed to Washington DC after the shooting.
Flights arriving at Ronald Reagan Washington National Airport were temporarily halted due to its proximity to the scene of the shooting, the US Federal Aviation Administration said.
Hundreds of National Guard members have been patrolling the nation’s capital after Mr Trump issued an emergency order in August, which federalised the local police force and sent in the guard from eight states and the District of Columbia.