Some strains of bird flu are coming ever closer to developing the traits they need to cause a human pandemic, a study released yesterday said. Researchers who analyzed samples of recent avian flu viruses found that a few H7 strains of the virus that have caused minor, untransmissible infections in people in North America between 2002 and 2004 have increased their affinity for the sugars found on human tracheal cells.
Subsequent tests in ferrets suggested that these viral strains were not readily transmissible. But one strain of the H7N2 virus, a low pathogenic avian flu strain isolated from a man in New York in 2003, replicated in the ferret’s respiratory tract and was passed between infected and uninfected ferrets suggesting it could be transmissible in humans.
The investigators said the evidence suggests that the virus could be evolving toward the same strong sugar-binding properties of the three worldwide viral pandemics in 1918, 1957 and 1968.
“These findings suggest that the H7 class of viruses are partially adapted to recognize the receptors that are preferred by the human influenza virus,” said Terrence Tumpey, a senior microbiologist with the US Centers for Disease Control and Prevention in Atlanta, Georgia.
The authors said that if the viruses continue to evolve in this direction, the avian flu viruses could travel more easily between other animals and humans.
They called for strict surveillance of avian flu viruses and continuing federal preparations for a possible future pandemic.
The study appears in the Proceedings of the National Academy of Sciences.
CHAOS: Iranians took to the streets playing celebratory music after reports of Khamenei’s death on Saturday, while mourners also gathered in Tehran yesterday Iranian Supreme Leader Ayatollah Ali Khamenei was killed in a major attack on Iran launched by Israel and the US, throwing the future of the Islamic republic into doubt and raising the risk of regional instability. Iranian state television and the state-run IRNA news agency announced the 86-year-old’s death early yesterday. US President Donald Trump said it gave Iranians their “greatest chance” to “take back” their country. The announcements came after a joint US and Israeli aerial bombardment that targeted Iranian military and governmental sites. Trump said the “heavy and pinpoint bombing” would continue through the week or as long
An Emirates flight from Dubai arrived at Taiwan Taoyuan International Airport yesterday afternoon, the first service of the airline since the US and Israel launched strikes against Iran on Saturday. Flight EK366 took off from the United Arab Emirates (UAE) at 3:51am yesterday and landed at 4:02pm before taxiing to the airport’s D6 gate at Terminal 2 at 4:08pm, data from the airport and FlightAware, a global flight tracking site, showed. Of the 501 passengers on the flight, 275 were Taiwanese, including 96 group tour travelers, the data showed. Tourism Administration Deputy Director-General Huang He-ting (黃荷婷) greeted Taiwanese passengers at the airport and
TRUST: The KMT said it respected the US’ timing and considerations, and hoped it would continue to honor its commitments to helping Taiwan bolster its defenses and deterrence US President Donald Trump is delaying a multibillion-dollar arms sale to Taiwan to ensure his visit to Beijing is successful, a New York Times report said. The weapons sales package has stalled in the US Department of State, the report said, citing US officials it did not identify. The White House has told agencies not to push forward ahead of Trump’s meeting with Chinese President Xi Jinping (習近平), it said. The two last month held a phone call to discuss trade and geopolitical flashpoints ahead of the summit. Xi raised the Taiwan issue and urged the US to handle arms sales to
State-run CPC Corp, Taiwan (CPC, 台灣中油) yesterday said that it had confirmed on Saturday night with its liquefied natural gas (LNG) and crude oil suppliers that shipments are proceeding as scheduled and that domestic supplies remain unaffected. The CPC yesterday announced the gasoline and diesel prices will rise by NT$0.2 and NT$0.4 per liter, respectively, starting Monday, citing Middle East tensions and blizzards in the eastern United States. CPC also iterated it has been reducing the proportion of crude oil imports from the Middle East and diversifying its supply sources in the past few years in response to geopolitical risks, expanding
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