Tennessee and many other states are seeing a record number of cases this year of whooping cough. One reason for the increase could be fewer children who are getting vaccinated against the disease. Over 260 cases of whooping cough have been reported this year in Tennessee. That’s an almost increase of 3 times over last year. Federal health officials recommend that children should be vaccinated for whooping cough by the time they’re 3. However, in Tennessee and most other states, only 80 percent of children are getting the vaccine in that time frame.