00:00Today we're talking about one of the most unsettling things humanity has ever faced, superbugs.
00:06Bacteria that can survive every antibiotic.
00:10They already exist, right now, in ICU wards.
00:14But they can't get out yet.
00:16The cost of resistance is too high.
00:19Outside the ICU, they lose against ordinary bacteria.
00:24But scientists are discovering something terrifying, more superbugs are learning to shed that cost.
00:30Once they do, we're looking at a global catastrophe.
00:34On our side.
00:36At its peak, 18 companies were developing new antibiotics.
00:40Now there are four.
00:42Every weapon we have was built 30 years ago.
00:46Bacteria never stopped evolving.
00:48We haven't created a single new weapon in three decades.
00:52Let me take you inside the ICU.
00:55The people lying here have immune systems that are essentially switched off.
01:00In the doctor's hands are humanity's deadliest cards, carbapenems, vancomycin, colistin.
01:06In critical cases, they throw all three at once.
01:10Under this assault, 99.99% of bacteria are wiped clean.
01:16But there's always that 0.01%.
01:19It survives.
01:22It didn't hide from the drugs.
01:24It was forced to rewrite itself.
01:27And once rewritten, it becomes the sole winner, carrying its resistance genes and multiplying.
01:33Here's where it gets twisted.
01:36In the ICU, the harder you kill, the stronger the survivor.
01:40Why?
01:41Because bacteria reproduce every 20 minutes.
01:45In days, that's millions of generations.
01:49Every dose of antibiotics eliminates the weak and leaves the strong behind.
01:54We've become the hand that forces their evolution.
01:57So the most dangerous bacteria aren't from the sewer.
02:01They're created in the cleanest hospital rooms.
02:04By us.
02:06You might think this is a hospital problem.
02:08In 2021, a Cardiff University team went to New Delhi to test the water.
02:14Out of 50 tap samples, 2 carried NDM, 1, a gene that chops up our strongest antibiotics.
02:21The ditch water was worse, 51 out of 171 samples.
02:27This gene isn't in a lab freezer.
02:30It's in the water people drink every day.
02:32And these genes hop between bacteria like USB drives.
02:37One bacterium learns it, and within days it spreads to an entire population.
02:43The upgrade path is terrifying, first resistance to one drug, then an entire class, then every drug.
02:50Many bacteria have already completed this journey.
02:54You've already met Merce.
02:56It escaped hospitals years ago.
02:58To fight it, doctors use vancomycin, the last resort.
03:03So why haven't these superbugs taken over?
03:06Because resistance isn't free.
03:09Bacteria burn energy to maintain their defenses.
03:13When there are no antibiotics around, resistant bacteria lose against their leaner cousins.
03:19They reproduce half as fast.
03:21That's the only thing keeping them locked in the ICU.
03:25But here's what keeps scientists up at night.
03:28In 2000, a Swedish team showed that bacteria can evolve a second mutation that cancels out the energy cost.
03:36The resistance stays, but the cost disappears.
03:39Free resistance.
03:42This explains why some resistant bacteria don't go away even when you stop using antibiotics.
03:48Once that happens, the ICU door starts to loosen.
03:52And it gets worse.
03:54Callistin is humanity's last line of defense.
03:57It's resistance couldn't jump between species.
04:01Until 2015.
04:03A Chinese team found MCR-1 in a pig in Shanghai.
04:08This gene had jumped onto a plasmid, capable of transferring between completely different bacteria.
04:14Within years, MCR-1 spread to over 40 countries.
04:18The year after, China banned callistin from animal feed.
04:23But humanity's last wall was leaking.
04:26Now put two facts together, bacteria that resist antibiotics for free, and genes that spread anywhere.
04:33The version that could sweep the globe is no longer hypothetical.
04:37It's just a matter of time.
04:39You think this is far from you.
04:42In 2022, The Lancet published a report analyzing 400 million patient records.
04:48The conclusion, in 2019, 1.27 million people died directly from drug-resistant infections.
04:56That's more than HIV or malaria.
04:58At this rate, by 2050, antimicrobial resistance could kill 10 million people every year.
05:06A small cut from cooking.
05:09A C-section.
05:11Chemotherapy.
05:12Every single one relies on working antibiotics.
05:16The day they stop working, even the smallest surgery becomes life-threatening.
05:20The problem is, pharma companies can't afford to make new antibiotics.
05:26A new drug generates about $46 million a year.
05:30That's nowhere near enough to cover R&D, out of 12 companies that could bring new drugs to market,
05:36seven went bankrupt or exited.
05:38Today, even the last holdouts are pulling out.
05:42After 1987, the industry named this period the antibiotic discovery void.
05:47We haven't produced a single new class of antibiotics in over 30 years.
05:53So the real question isn't whether that global superbug will appear.
05:57It's whether we can build the next weapon before it learns to resist for free.
06:02This race is happening right now.
06:05And we need to ask ourselves, who's winning?
