Despite the wide availability of Covid-19 vaccines, not all Halloween parades have been safe from virus-related cancellations this year.

In Westchester County, N.Y., for example, the Tarrytown Halloween Parade was canceled out of concern, the organizers said, for “our most precious attendees, our children,” many of whom are not yet eligible for vaccines. And in nearby Rockland County, Nyack’s Halloween parade was canceled, too. The National Zoo also canceled its popular Boo at the Zoo because it didn’t feel it could keep visitors or animals safe from the virus.