DailyDrop.

Reports of a possible plague case in Siberia have been circulating since Monday. On Wednesday the World Health Organization (WHO), based in Geneva, stepped in. According to reports by the NZZ, Tages-Anzeiger and SRF, it is offering Russia technical support and demanding clarification. The person who died was a 28-year-old scientist who worked at a state institute for combating plague diseases in the Irkutsk region. She died in the district hospital in the town of Shelekhov. The Russian epidemic control authority says the death was not caused by a plague pathogen and names pneumonia of unknown origin as the cause. So far this cannot be independently verified. WHO Director-General Tedros Adhanom Ghebreyesus asked for details on the cause of the pneumonia, on the pathogen and on media reports about a second employee of the institute who is also said to have fallen ill with pneumonia of unclear cause. WHO epidemiologist Maria Van Kerkhove said the organization does not know the cause of death. A second case is not officially confirmed. Russian state media have largely avoided the subject, according to reports. Two accounts therefore stand opposed: the terse statement from the authority in Moscow and a series of questions it leaves open. Which pathogen caused the pneumonia, whether contacts are being tested and whether the institute has restricted operations is not known.

Washington, too, is demanding transparency. According to the Tages-Anzeiger and SRF, President Trump announced he would phone Kremlin chief Putin over the suspected pneumonic plague. The US had already demanded answers on Monday. The NZZ reported rumors of a Russian bioweapons program; there is no evidence for them. Early media reports suspected that the pathogen had been released accidentally from the lab. That, too, is unconfirmed. Why the case nevertheless deserves attention has to do with the pathogen itself. Plague occurs naturally in wild rodents in parts of Siberia, Central Asia and other regions of the world, and is treated with antibiotics if detected early. Pneumonic plague is the most dangerous form because it can be transmitted from person to person. A lab that researches the pathogen must therefore observe strict safety rules. For Switzerland the question is not only a medical one. The WHO has its seat in Geneva, and the International Health Regulations oblige states to report unusual disease events quickly. Whether Russia shares samples, lab findings and contact lists is the real test. By Wednesday evening no information on this was available. It is worth keeping the levels apart. A natural plague case in a researcher would be tragic, but medically explicable. A lab accident would be a safety problem affecting other labs worldwide. A link to weapons research would be a political scandal. There is as yet no evidence for any of these explanations. The World Health Organization has therefore chosen the only means left to it: asking publicly.