There is an article in my local paper today saying that a local vet has said that there is a massive myxi outbreak around the Maldon/Burnham-on-Crouch/South Woodham/East Chelmsford area of Essex at the moment. Given that Burnham is close to the river, I'd say it's possible that the disease could cross the river down to the Wickford/Rayleigh/Southend area, so please make sure your bunnies vaccinations are up to date!