Black Death is able to reach more areas due to global warming, Russia's top ...
Bubonic plague is the most common form of plague and is spread by the bite of an infected flea. The infection spreads to immune glands called lymph nodes, causing them to become swollen and painful and may progress to open sores. Human-to-human transmission of bubonic plague is rare and it's usually caught from animals.
If plague infects the lungs – either by the bubonic form progression through the body or by catching the infection from an infected patient or animal's breath – it is called pneumonic plague.
Historically, plague was responsible for widespread pandemics with high mortality.
People infected with plague usually develop acute febrile disease with other non-specific systemic symptoms after an incubation
