Provincetown's COVID-19 cluster has grown to at least 551 confirmed cases.

Of these cases, 394 individuals are Massachusetts residents, 171 of whom reside in Provincetown, while the remaining individuals who tested positive reside in other states or jurisdictions.

Sixty-nine percent of confirmed cases among Massachusetts residents have occurred in individuals who were fully vaccinated, officials confirmed, and those infected have been found to be predominantly symptomatic.

Officials from the Massachusetts Department of Public Health announced on Friday that genetic sequencing of initial viral samples, associated with the cluster, had indeed tested positive for the delta variant.

"Labs identified the delta variant in cases associated with this cluster and additional specimens from the Provincetown cluster are continuing to be prioritized for sequencing.