San Jose, CA. - A hospital in San Jose has confirmed an outbreak among is staff, according to the Associated Press.

The outbreak started with 44 staff members who all tested positive for COVID-19 between December 7th through January 1st. The staff all received the vaccine 10 days ago, but according to the hospital, the vaccine wouldn't have made medical staff fully immune by the time they were exposed.

The hospital believes the outbreak happened on Christmas Day, when an employee in an inflatable costumed appeared in the emergency room.

The hospital says the emergency room is safe, and contact tracing is currently underway.