NSW Recent vs older cases

Epidemiology is the study of the patterns of diseases in populations.

NSW DPI epidemiologists are monitoring the equine influenza outbreak closely and using the information collected to report the situation and make predictions. Some of their findings are shown in the maps and graphs below.

This section will be updated weekly with the latest information.
Recent vs older cases

The graph below shows the changing numbers of recent and older cases over time, as well as the number of infected premises that have been resolved.

* Recent cases (red bars) are ones which have been reported as infected within the last 21 days and are likely to still be actively infected.
* Older cases (blue bars) are ones that have been infected for more than 21 days.
* Resolved cases (green bars) are ones that have been assessed and are no longer considered to be infected

As can be seen, the number of recent cases reached a peak in late September, started to decline from about the second week of October and is now about 1,000 cases state-wide. Numbers of older cases has increased progressively since late September. Increasing numbers of cases have now been resolved, with work progressing to actively resolve cases, particularly in outlying areas and clusters. The total number of cases is starting to level off at around 5,500 to 6,000 as the number of recently reported IPs declines.