A laboratory worker in Russia who may have been exposed to pneumonic plague has died, leading to nearly 200 people being placed under medical observation, according to reports. The female researcher at an anti-plague institute in the Siberian city of Irkutsk, had died of "pneumonia of unknown etiology" or origin, according to the country's consumer welfare service on Sunday. Dr Simon Clarke from the University of Reading told Sky News if the reports are true, they are concerning. Read more: https://news.sky.com/story/russian-laboratory-worker-dies-of-suspected-pneumonic-plague-as-200-under-medical-observation-13595297 #skynews #plague #russia SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on X: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB Why not listen to one of our podcasts? This is Why, available for free here: https://podfollow.com/thisiswhy or Ed Conway's Stuff Matters, available here: https://podfollow.com/stuff-matters To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales