Dozens of veterans went to the canteen of the social rehabilitation center in Moscow.
The capital's Department of Social Protection commented on the situation.
About 20 residents of the Mikhailov Center have been hospitalized, RIA Novosti reports. Specialists assess their condition as stable, they are under the supervision of doctors.
Meanwhile, a number of sanitary measures were carried out in the center itself with the assistance of Rospotrebnadzor employees.
Following the incident, the center changed its food supplier.
Veterans who remained in the social institution are under the supervision of the center's staff.
In addition, medical workers are on duty in the center itself. Veterans who do not have symptoms of poisoning were escorted home.
