The Role of Fleas:
* Primary Hosts: Fleas are the primary carriers of the plague bacteria, *Yersinia pestis*.
* Infection: Fleas become infected when they feed on plague-infected rodents (like rats, squirrels, or prairie dogs).
* Transmission: The infected fleas then transmit the bacteria to other rodents or, occasionally, to humans.
Rodents as Reservoirs:
* Not all rodents are affected: Only certain types of rodents (usually those living in close proximity to humans) are susceptible to the plague.
* Survival: Rodents often survive the plague, becoming long-term reservoirs for the bacteria.
* Spread: They can then spread the plague through flea bites to other rodents or even humans.
Humans and the Bubonic Plague:
* Fleas: Humans get the bubonic plague most commonly through the bite of an infected flea.
* Direct contact: It can also be contracted through direct contact with infected animals (handling or skinning).
* Inhalation: A rarer form, pneumonic plague, can be contracted through inhaling infectious droplets from an infected person or animal.
Important Note: The bubonic plague is a serious disease, and if you suspect you may have been exposed, seek immediate medical attention.