Siberian lab researcher death sparks debate over pneumonic plague
- A 28-year-old laboratory researcher in Siberia died of pneumonia of an unknown origin last week, prompting international concern and conflicting public statements over whether the death involved the...
- Plague bacteria manifest in different forms depending on which body part they invade.
- Emory University medical entomologist Adelaide Miarinjara described pneumonic plague as much more dangerous because it transmits easily between people through droplets, comparing its spread to COVID-19.
A 28-year-old laboratory researcher in Siberia died of pneumonia of an unknown origin last week, prompting international concern and conflicting public statements over whether the death involved the plague. NPR reported that Russia’s consumer health watchdog concluded that no pathogens in the worker’s body connected to her work with infectious disease, yet local media raised alarms about pneumonic plague. World Health Organization head Tedros Adhanom Ghebreyesus stated Wednesday that Russian assurances remained incomplete because officials lacked a full picture of the event.
Pneumonic Plague Transmits More Easily Between People
Plague bacteria manifest in different forms depending on which body part they invade. Flea bites typically cause bubonic plague, characterized by swollen and painful lymph nodes known as buboes, which doctors diagnose via blood or lymph node samples. When the bacteria spread to the lungs, however, they cause pneumonic plague, an airborne and potentially fatal variant that often lacks the telltale physical signs of the bubonic form.
Emory University medical entomologist Adelaide Miarinjara described pneumonic plague as much more dangerous because it transmits easily between people through droplets, comparing its spread to COVID-19. Miarinjara noted that the disease progresses rapidly, making early diagnosis crucial for survival, while treatment typically relies on antibiotics administered by intravenous infusion.
Quarantine Practices Date Back Thousands of Years
Reports indicating that 200 “contacts” of the deceased lab worker were placed under quarantine reflect ancient isolation practices. The concept of isolating sick individuals dates back at least 3,000 years, appearing in the Book of Leviticus regarding leprosy. The modern term quarantine originated during the Black Death when the Adriatic merchant city-state of Dubrovnik forced visitors to wait 40 days on a remote island before entering.
Madagascar experienced a large pneumonic plague outbreak in 2017 after a traveler brought the disease to the coastal city of Toamasina via public transportation. That outbreak recorded over 2,400 suspected cases, including nearly 1,900 pneumonic plague cases, with one study estimating a 25% mortality rate among confirmed patients.