Rabies isn't trying to kill - it's trying to control!

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0:00Rabies is the one of the deadliest diseases we know of; if you don’t get treatment soon

0:05after getting exposed, you’re almost certain to die. But rabies’ intent isn’t

0:10actually to kill – it's to control. Rabies is transmitted through saliva;

0:14in order to infect a new host, that virus-laden saliva needs to make its way into a different

0:19critter’s body. Once it’s in there, unlike most pathogens – which move through the

0:23bloodstream – rabies viruses travel through their host’s nerves. It’s not a fast way to

0:28travel – the viruses only advance a few inches a day – but it helps hide them from the host’s

0:33immune system, and it’s a direct route to rabies’ desired destination: the brain.

0:38There, the viruses start to build up. Scientists don’t totally understand the details, but the

0:43viruses seem to bind to receptors that allow brain cells to communicate with each other – basically

0:48seizing control of the brain. The host becomes less fearful and more aggressive, which means it’s

0:54more likely to come into contact with – and bite – another potential host, passing along the virus.

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