While there has been much in the media recently about the cases of Hendra virus in Queensland, there is nothing to suggest there is any change to the very low level of risk of this disease in Tasmania.
However, the key lesson for us all from the events in Queensland is that any horse owner/handler who comes into contact with sick horses should practise good biosecurity and not take risks with their health. HeV is not the only disease that can be transmitted from horse to human. Appropriate biosecurity precautions include good hygiene, PPE and keeping records of horse movements on and off your property.
Please be aware that some masks - mostly surgical masks - work "the other way". That is, they only stop you infecting the patient, which is pretty pointless when it's the horse that's sick. You need a mask that would stop a sick horse from infecting you !
The masks recommended as a minimum for HeV are P2's (N95)
If you want to keep up to date with the Hendra situation in Queensland, the Qld DPI has established a Hendra outbreak website. That includes a Hendra newsletter you can subscribe to if you want.