Retrospective analysis of effectiveness of influenza vaccination among the elderly population in Ningbo City
ZHU Guang-hui
LIANG Xing-yu
GUO Miao-lian
LIU Wen-xin
HU Qin-yong
Machine-generated Keywords：
Publication Date：2021-12-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 787-789 )