Health authorities in the northern city of Tianjin reported the case, according to CCTV.
The Omicron strain, which originated in South Africa, was designated a "Variant of Concern" by the World Health Organisation. Its spread has prompted lockdowns and the tightening of anti-pandemic measures across the globe. The strain contains more mutations of the spike protein (32) than all previous variants, which raises concerns about its possibly high transmissibility.