How does a specific event, such as an increasing prevalence of aids, the 9/11 terrorist attacks, or the recent ebola crisis, create change in public health policy?

Most of the time, when a specific event like this occurs, public health policy changes as it tries to cope with the emergency. This usually leads to several important changes, such as increased focus on this disease, health campaigns or more economic investment in medical services. Therefore, these events have often led to improvements in healthcare in the long run.

answer; /// i believe its the cochlea;