Ballad Heatlh the region’s largest hospital system is instituting a requirement for employees to wear color-coded badges indicating whether they’ve been vaccinated against COVID-19.Ballad Health announced the policy change on July 6. Hospital officials of the Johnson City Health Center say It’s called the “badge buddies” program. Employees who’ve been vaccinated will have the color blue on their badges. Unvaccinated employees will have the color orange on their badges.