由于特朗普政府迟迟未启动资金续签程序，四个致力于研发HIV、结核病及其他新发传染病疫苗与治疗方案的大型研究网络如今前景未卜。
The future of four large research networks that test vaccines and treatments for HIV, tuberculosis and emerging infectious diseases is in limbo after weeks of delays from the Trump administration in launching the process to renew their funding.
这些网络还致力于其他传染病的防治工作，曾在新冠疫苗的测试过程中发挥关键作用。
The networks also develop treatments and preventions for other infectious diseases and were instrumental in testing the Covid vaccine.