Llantrisant farmer, Tim Prichard says many farmers have lost 30 to 50 per cent of the lambs they were expecting this year due to the virus.
More top news
Tackling the effects of a new and emerging drug has been described as one of the 'biggest challenges in policing'.
The pit closed in 1996 with the loss of hundreds of jobs.
Pollen levels will remain moderate tomorrow and Tuesday, but will be lower on Wednesday.