What can individual do to further public health?

Get educated about it, stay healthy, and more.

Explanation:

There are many steps that one individual can do to further public health and one of them is to stay healthy, get vaccinated, become an organ donor, volunteer with a public health promotion campaign, get educated about health and how we can help other people, wash our hands, share some evidence-based news that is referring to the public health.

hpv is the answer

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.