The public health strategies we use depend on the outbreak, and also on who is affected.

我们使用的公共卫生策略取决于疫情，也取决于受影响人群。

Now, researchers say they know more about which public health strategies help reduce gun violence and which ones do not.

现在，研究人员表示，他们更了解哪些公共卫生战略有助于减少枪支暴力，哪些不利于减少枪支暴力。

And we have done this through multiple public health strategies, with smoking, for example.

我们已经通过多种公共卫生策略做到了这一点，例如吸烟。