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  • 2 weeks ago
A new study has uncovered a terrifying trait in bird flu viruses — they can survive even during high fevers, one of the body’s strongest defenses against infections. Researchers from Cambridge and Glasgow found that a single gene, PB1, gives bird flu the power to keep replicating at temperatures that stop human flu dead in its tracks. Even more alarming, this gene can jump between bird and human flu strains — a phenomenon seen in past deadly pandemics. With bird flu fatality rates in humans exceeding 40% in some cases, experts warn this mutation could fuel the next global outbreak. Watch to understand how this virus is evolving — and why scientists are on high alert.
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00:00What if your body's best defense against viruses just doesn't work anymore?
00:04Scientists have found that bird flu viruses can survive even when your body has a high fever,
00:09a natural defense that normally stops most viruses in their tracks.
00:13In a groundbreaking study by Cambridge and Glasgow universities,
00:17researchers discovered that while human flu dies off at high temperatures,
00:21avian flu keeps multiplying.
00:23They tested this in mice by mimicking fever conditions
00:26and saw that just a 2-degree rise was enough to stop human flu.
00:31But bird flu? It kept spreading like wildfire.
00:34The secret lies in a single gene called PB1.
00:37This gene helps avian flu resist heat.
00:40And what's scarier is that it can jump into human flu viruses, like it did in past pandemics.
00:45This heat-proof mutation could help bird flu strains become more dangerous and harder to stop.
00:50And with bird flu fatality rates in humans reaching over 40%
00:54in past cases like H5N1, the threat is very real.
00:58Experts warn that this could be the next pandemic trigger.
01:01Monitoring and testing these viral traits is now more urgent than ever.
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