Siberia lab accident raises plague concerns after researcher's death

A researcher in Siberia died of an unknown pneumonia after a lab accident, prompting quarantine of a hospital and medical monitoring of nearly 200 contacts. Officials have not confirmed the cause of death. The 28-year-old woman worked at an anti-plague institute in Irkutsk, and Russian media reported she broke a test tube, though no known pathogens were found in her body. Experts say the response is precautionary, with no secondary cases reported. Plague is treatable with antibiotics if caught early, and transmission between humans is poor compared to viruses like COVID-19. While historical pandemics occurred, modern diagnostics and treatments reduce pandemic risk, though antibiotic-resistant strains remain a concern.