(WPXI) – Leaders with the Allegheny-Fayette Central Labor Council and local officials on Wednesday announced that Pittsburgh’s popular Labor Day Parade will be canceled for the second year. The groups gathered at the City-County Building, Downtown, to make the announcement. The parade was canceled in 2020 as cases of Covid-19 spread through the area. Leaders said the decision to cancel again this year was based on high transmission levels of the Delta variant and concerns for the safety of parade participants and spectators. A particular concern mentioned Wednesday was that the parade normally features more than 1,000 local teachers, and leaders said they could not in good conscience have that many teachers in a crowd of thousands and then send them back into classrooms, where children under the age of 12 are not eligible to be vaccinated.