用immunity level造句子，“immunity level”造句
來源：國語幫 2.76W
The rise in cases underlines the urgent need to conduct high-quality immunization campaigns to rapidly boost population immunity levels.
Objective To determine the infection status and immunity level of epidemic cerebrospinal meningitis in susceptible population in Hefei based on immunoserological surveillance.
To minimize the risk of outbreaks from importation, countries must maintain high population immunity levels.
