Ivan-Christian Kurolt, a researcher at the hospital, said that the detected mutations were defined by multiple spike protein mutations: HV69/70 deletion and Y144, N501Y, A570D, P681H and T716I deletion.
The samples with the detected mutations were taken from a 50-year-old man, a three-year-old child, both from Zagreb and from a 34-year-old man from the eastern Slavonski Brod-Posavina County.
The relevant epidemiologists of the Croatian Institute of Public Health have been notified of the developments.