Andy Tullis / The BulletinSeventh-grader Jake Severson, 12, gets vaccinated Wednesday against tetanus, diphtheria and pertussis (whooping cough) by Marylou Paterson, a registered nurse for Bend-La Pine Schools, at Ensworth Elementary School in Bend. Deschutes County had seven cases of whooping cough in 2013 and three in 2012, when the state as a whole had more than 900 cases, the most since 1953.