SCOPS group predict high fluke risk
The SCOPS group put out a fluke alert at the end of summer warning that due to the wet summer the fluke risk would be high and to make sure prescribers discussed the situation with their farmers. The fluke challenge has, as anticipated, been very high this year and the traditional treatment times are no longer applicable.
None of the flukicides are persistent so the minute the stock graze fluke infested pasture again they get reinfected. The fluke numbers are so high at the moment sheep may show clinical disease 4-5 weeks after treatment. RE-treatment times are not exact and will vary from farm to farm but local sources of information like VI centres may give a guide on the current situation.
For more information visit SCOPS.