That Britain's pig herds have been ill for many years comes as no surprise and is part of the explanation for the poor productivity per sow.
Irish productivity is very low too, although not quite as low as British figures - details here
This level of swine flu comes as a considerable shock.
Swine flu incidence
higher than thought
Aly Balsom
Friday
19 October 2012 12:31
Nearly
three-quarters of British pig herds are infected with swine flu, according to
new findings.
Routine
diagnostic blood testing in the UK and Ireland indicated that the incidence of
the disease could be higher than expected, with more than 70% of British herds
having one or more pigs test positive. This figure increased to more than 90%
in Ireland....
