Little Cherry Virus causes small, discoloured cherries with a bitter taste that can not be marketed. With a history of this virus in British Columbia, and a current epidemic in Washington State, cherry growers should inform themselves of the transmission, symptoms, controls, and sampling practices. An article about Little Cherry can be found at the link below, on the BC Cherry Website. 

https://www.bccherry.com/wp-content/uploads/2021/02/Little-Cherry-Disease_2020.pdf

Additional resources for sampling and scouting can be found at http://treefruit.wsu.edu/article/new-resources-little-cherry-scouting-and-sampling/