In addition, the immunity produced so far lasts only three to six months, so frequent vaccinations would be necessary . 再則,至此產(chǎn)生的免疫只能持續(xù)三至六個月,因此需要經(jīng)常種痘。
The research for a sort of sars epidemic dynamical system 一類帶有種痘年齡的流行病模型
A preliminary study of vaccination in jiangnan during the qing dynasty 清代江南種痘事業(yè)探論
For things like vaccinations , checkups , dental visits , and more ,可用于種痘定期檢查牙醫(yī)檢查及其他的保健用途。
Vaccination campaigns have controlled the disease in western countries 種痘運動在西方國家已經(jīng)很好的控制了這種疾病。
Induced by vaccination 因種痘引起的
Measles is the leading cause of vaccine - preventable death in children (作業(yè)句)麻疹是導(dǎo)致孩子死亡的罪魁禍?zhǔn)祝@種病是可通過種痘預(yù)防的。
Please have your passport , health certificate and vaccination certificate ready . they ' ll be inspected 請將您的護照、健康證書和種痘證書準(zhǔn)備好,已被檢查。
No inoculations or vaccinations are required unless coming from or passing through an infected area 除非您是經(jīng)過或從傳染區(qū)域而至,否則預(yù)防和種痘是不需要的。
The world health organization says vaccination campaigns in more than forty countries in africa have saved one million children 世界衛(wèi)生組織說在非洲四十多個國家進行的種痘運動已經(jīng)挽救了一百萬個孩子。