The peak period of flu transmission is usually late July and August and even well into September, so getting vaccinated now will give you a good level of protection during that period.
Providing healthcare within a multicultural setting is a complex matter. Health issues are at the core of human experience, and many migrants with poor English have immense difficulty accessing Australian health services.
Medical research has come a long way, and as a result, people live much longer than they used to. However, learning about and practicing preventive healthcare is the best method to prevent disease from happening in the first place.