Farmers hoping that DEFRA's epidemiological report into the bluetongue outbreak was going to be illuminating are going to be disappointed.
The report concludes that the infection was likely to have been initially introduced into Norfolk, Suffolk and Essex on the night of 4/5 August by windborne transmission of infected midges from continental Europe.
The report also describes the generally low morbidity, mortality and prevalence rates in infected animals. The majority of infected premises have only one infected animal and the prevalence is generally low.
Other than that - all it really says is further surveillance is going on.