送交者: HunHunSheng 于 2005-11-11, 18:10:31:

Which kinds of polio vaccine is used in China now?
Active Oral PV or inactive Injectioned PV?

If there is no Poli o reported in China, China should
switch to IPV

• Polio

• oral - PoohHunny2 (0 bytes) 2005-11-11, 20:06:59

加跟贴