Serious diseases like Bacterial wilt or Fusarium wilt can cause a lot of damage when when they attack crops especially tomatoes.
Tomato Diseases
These diseases cannot be controlled but there are measures in which they can be limited. To avoid loosing all the crops ensure you do soil analysis to check if the soil is affected. Again always buy certified seedlings from certified seed leasers.
There is no disease resistance variety but growing tolerant varieties to these diseases helps avoid them, especially when there are traces of these bacteria’s in the soil, the tolerance levels varies from one variety to another. While buying these varieties avoid guesswork and consult an expert for advice on the best variety to plant.