The World Health Organization (WHO) is requesting information from Russia concerning reports of a second worker at a plague institute laboratory developing pneumonia. This request follows the death last week of a laboratory employee at the institute located in Siberia. Russian public health services previously announced that no cases of plague were detected among individuals who had contact with the deceased worker. The WHO is seeking further details regarding the new case to assess potential risks and implement appropriate public health measures. Authorities are currently investigating the situation to determine the cause of the pneumonia and any possible connection to the fatal case. This development raises concerns about safety protocols within the laboratory and the potential for further outbreaks. Further updates will be provided as more information becomes available from Russian officials.