Photo by File Photo The current situation regarding COVID-19 is one where the public needs to remain particularly diligent in its action to prevent the disease and its spread. That was the clear message from Dr. Ashok Chhetri, Medical Health Officer, Saskatchewan Health Authority in Yorkton in an interview Monday. article continues below Trending Stories The great concern at present are variant strains of COVID getting a foothold, and Chhetri said they are being seen in the east central area, not that variants of viruses are that unusual. “All the viruses do change or mutate from time-to-time,” he explained. In some cases the changes are rather insignificant, and other times changes become more concerning.