Russia: Tests Clear Plague Lab Worker's Death, 189 Quarantined

Unless the situation worsens, markets should not respond much, given that close contacts have tested negative and authorities say there is no outbreak. If plague is confirmed with additional cases among those being monitored, that could generate wider health-scare news and a slight safe-haven bid. The local industrial sector is most at risk: measures at the adjacent aluminium smelter deserve attention, since aluminium supply is already constrained by Middle East conflict. The three-week quarantine ending in late October is the key moment when the scare will either subside or intensify.

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Earlier:

• 28-year-old Russian plague lab worker dies of pneumonia of unknown origin

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The death at a Siberian plague lab has two competing narratives, one from officials and one from the media, with 189 people under a three-week quarantine to see which version holds true.

Summary:

• On October 2, a 28-year-old lab assistant at the Irkutsk Anti-Plague Research Institute died from pneumonia of unknown cause.
• Euronews said she broke a test tube with Yersinia pestis on September 25; other accounts indicate she may have been infected during a work trip to Buryatia.
• Rospotrebnadzor stated tests showed no microorganisms related to her work and described the situation as stable.
• About 189 people are being monitored for three weeks. Hospitals in the area have been shut, and mask use is required at a nearby aluminium plant.
• Close contacts have not displayed symptoms and have tested negative so far.

Russian health officials said tests on the lab worker who died at a Siberian anti-plague institute did not find any trace of the microorganisms she worked with. However, media reports speak of a lab accident with the plague bacterium, and around 200 people are still under medical observation.

According to Euronews, the 28-year-old lab assistant at the Irkutsk Anti-Plague Research Institute in Shelekhov, identified as Darya Shipilova, died early on October 2 in intensive care at the local district hospital. The cause of death has been officially listed as pneumonia of unknown origin.

Euronews reported that on September 25, while handling live biological material, she shattered a test tube containing Yersinia pestis, the plague bacterium. Two days later, her condition deteriorated. She was first thought to have Covid-19 but then worsened quickly and was put on a ventilator. Outbreak News Today cited other reports that she might have contracted the infection during a work trip to nearby Buryatia. Authorities stated that how she fell ill is unclear.

Russia's consumer health watchdog Rospotrebnadzor called the epidemiological situation in the region stable. Additional tests found no microorganisms associated with her work, it said. The head of Buryatia had earlier suggested she may have died of plague, but a former Rospotrebnadzor head said the infection was probably not plague.

Extensive precautions have been taken. Russian media reported that about 189 people are under observation, with a three-week quarantine. Several hospitals in the area have been shut, the nearby Irkutsk Aluminum Plant requires masks for staff, and protective gear has been handed out in kindergartens. According to the plant's director, identified close contacts have not shown symptoms and have tested negative.

The incident has stirred public concern in Russia, as officials initially refrained from mentioning plague. It also brings to mind the early Covid-19 period, when speculation about a Wuhan lab leak fueled a never-settled debate on the pandemic's origin. For now, the fact that no new cases have emerged among contacts is the most reassuring indicator, and the conclusion of the three-week observation period will be a crucial milestone.

Briefings on the incident have been taking place at the White House.