分子疫苗可由寄生虫的自然分子组成,或通过生物学和化学的途径合成。分子疫苗主要是预防寄生虫的初次或持续感染,其次是减少寄生虫在易感人群中的传播。分子疫苗具有以下优点:(1)疫苗的质量控制及稳定性的监控较简易;(2)由疫苗接种而诱发不良免疫反应、毒性反应和副作用等的可能性较小;(3)生物学和化学合成途径是获得足够量疫苗的唯一可行且较安全的方 Molecular vaccines can be made up of natural molecules of parasites, or synthesized biologically and chemically. Molecular vaccine is mainly to prevent the initial or persistent parasitic infection, and secondly to reduce the spread of parasites in susceptible populations. Molecular vaccines have the following advantages: (1) quality control and stability monitoring of vaccines is relatively simple; (2) there is less likelihood of adverse immunological reactions, toxic reactions and side effects induced by vaccination; (3) biology and Chemically synthetic routes are the only viable and safer side to getting enough doses of vaccine