Incision infection rate was 3? %.

术后切口感染率为3 %。

The HIV infection rate in this group has doubled, we are told.

我们被告知，HIV的感染率在这一群体中居然是加倍的。

The infection rate of spine is low, and mortality is high.

腰椎旁接种感染率偏低，且死亡率高。

The infection rate was 39 percent lower after two and a half years.

而使用两年半以后，感染率则可降低39%。

It has previously been shown to reduce the infection rate to near zero.

以往的经验显示，这些措施可以使感染率降低至接近零。