Michael Barton died in the Oregon State Penitentiary last year after catching the flu.
Clark County Public Health identified one new confirmed case of measles Tuesday.
The outbreak was appearing to slow as it had held at 70 confirmed cases for more than a week.
A report from the Centers for Disease Control and Prevention’s revealed a 2017 case of tetanus in an unvaccinated child in Oregon.
It was the first pediatric case of tetanus in the state in more than 30 years.