There have still been no new cases since 1 March.
Six further possible cases occurring prior to 1 March have recently come to light, making a total of 12 possible cases to date.
Environmental and veterinary investigations are continuing as all practical steps are taken to establish the cause.
Local vets, specialist laboratories, The Forestry Commission, The Environment Agency and other authorities including New Forest District Council continue to co-operate in working to find the cause of the illness.
Should members of the public have any information that they believe would help with this investigation please email: firstname.lastname@example.org or telephone 023 8028 3141.
Dog owners should be vigilant, and contact their vet if they have any concerns about the health of their dogs.