Is the Plague Back?

What the plague is

• The plague is caused by the bacterium Yersinia pestis, which circulates naturally among some wild rodents and fleas.
• Infected fleas can transmit the bacteria to people through bites. The infection can cause three main forms:
• Bubonic plague: Affects the lymph nodes, causing painful, swollen “buboes” and tissue damage.
• Septicemic plague: Infects the bloodstream, potentially causing clots, poor circulation, and tissue death.
• Pneumonic plague: Infects the lungs and can spread between people through respiratory droplets during close contact.

Why the Russia case drew attention

• The video reports that a woman in Russia died of pneumonic plague, prompting precautions and concern about possible spread.
• Pneumonic plague can progress rapidly and is especially dangerous without treatment. However, person-to-person spread generally requires close contact; it is not as transmissible as diseases such as measles, flu, or COVID-19.
• The video says antibiotics—including gentamicin, doxycycline, and ciprofloxacin—can treat plague, and describes a 2025 Arizona case in which exposed contacts received preventive antibiotics without becoming ill.

Should people expect another Black Death?

• The video argues a large outbreak is unlikely: modern sanitation, medical knowledge, and access to antibiotics make today’s conditions very different from those of the 14th century.
• Plague has not disappeared. The video estimates 1,000–2,000 cases worldwide each year, mainly in Madagascar and the Democratic Republic of the Congo, and notes that the bacterium exists in animal populations in several regions.
• It says the Russia incident is too early to interpret as a major global threat.

Biological-weapons concerns

• Historical accounts describe attempts to use plague-infected bodies or animals in warfare; the video also mentions Japanese wartime use and US and Soviet research. It cautions that details about some programs are scarce.
• It concludes there is not enough information to draw conclusions about the current case being related to biological warfare.

Bottom line

The plague still occurs naturally, but modern treatment and public-health precautions make a repeat of the Black Death unlikely. The video suggests that more actively spreading diseases, such as Ebola and measles, warrant greater immediate concern.