![[Figure 1]](http://onlinelibrary.wiley.com/store/mrw_content/cochrane/clsysrev/articles/CD005133/image_t/tCD005133-AFig-FIG01.png?v=1&t=h2s1ghwc&s=5f1917c6f41b41e3e56ed3c3de214c5212ba6b8c) | Figure 1. Flow-chart indicating the number of citations retrieved by individual searches and the final number of included trials; reasons for exclusions are provided. |
![[Analysis 1.1]](/images/14651858/forrest_default.gif) | Analysis 1.1. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 1 All symptomatic CMV disease. |
![[Analysis 1.2]](/images/14651858/forrest_default.gif) | Analysis 1.2. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 2 CMV organ involvement. |
![[Analysis 1.3]](/images/14651858/forrest_default.gif) | Analysis 1.3. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 3 CMV associated symptoms. |
![[Analysis 1.4]](/images/14651858/forrest_default.gif) | Analysis 1.4. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 4 Acute rejection. |
![[Analysis 1.5]](/images/14651858/forrest_default.gif) | Analysis 1.5. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 5 All-cause mortality and graft loss. |
![[Analysis 1.6]](/images/14651858/forrest_default.gif) | Analysis 1.6. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 6 Other infections. |
![[Analysis 1.7]](/images/14651858/forrest_default.gif) | Analysis 1.7. Comparison 1 Pre-emptive medication for CMV viraemia versus placebo or standard care, Outcome 7 Adverse effects. |
![[Analysis 2.1]](/images/14651858/forrest_default.gif) | Analysis 2.1. Comparison 2 Pre-emptive medication versus prophylaxis, Outcome 1 All symptomatic CMV disease. |
![[Analysis 2.2]](/images/14651858/forrest_default.gif) | Analysis 2.2. Comparison 2 Pre-emptive medication versus prophylaxis, Outcome 2 Acute rejection. |
![[Analysis 2.3]](/images/14651858/forrest_default.gif) | Analysis 2.3. Comparison 2 Pre-emptive medication versus prophylaxis, Outcome 3 All-cause mortality and graft loss. |
![[Analysis 2.4]](/images/14651858/forrest_default.gif) | Analysis 2.4. Comparison 2 Pre-emptive medication versus prophylaxis, Outcome 4 Adverse effects. |
![[Analysis 3.1]](/images/14651858/forrest_default.gif) | Analysis 3.1. Comparison 3 Oral versus IV ganciclovir, Outcome 1 All symptomatic CMV disease. |
![[Analysis 3.2]](/images/14651858/forrest_default.gif) | Analysis 3.2. Comparison 3 Oral versus IV ganciclovir, Outcome 2 All-cause mortality. |
![[Analysis 3.3]](/images/14651858/forrest_default.gif) | Analysis 3.3. Comparison 3 Oral versus IV ganciclovir, Outcome 3 Other infections. |