I came across a question asking "Explain how falling immunisation rates may impact on the health status of Australians" would anyone be able to help me with this question??? Thankyou! 
Hi

This question you can really refer to any vaccine preventable disease and say that decreased rates on immunisations increase the incidence of these condition, eg falling rates of measles can increase the number of people who contract the disease, this disease can be fatal and therefore lower life expectancy.
You can do the same with any of these diseases
diphtheria, tetanus, pertussis
(whooping cough), polio, pneumococcal
disease, meningococcal C disease, hepatitis B,
Haemophilus influenzae type b (Hib), rotavirus,
chicken pox, measles, mumps and rubella
(German measles)
Also for answering health status questions yearningforsimplicity wrote a fantastic explanation here.
HHD Questions Thread 2014If you like you can give a question a go and post your answer up here
Hope this helps