title: Vaccine Adjuvants and Delivery Systems
author:  Manmohan Singh 
description: "This book is very useful for understanding vaccines and their delivery systems." (<i>Doody's Health Services</i>)
zlib_text:  
   
   
  Vaccines 2020, 8, 153; doi:10.3390/vaccines8020153 
  www.mdpi.com/journal/vaccines 
  Review 
  Progress and Prospects on Vaccine Development 
  against SARS-CoV-2 
  Jinyong Zhang 1, Hao Zeng 1, Jiang Gu 1, Haibo Li 1, Lixin Zheng 2,* and Quanming Zou 1,* 
  1 National Engineering Research Center of Immunological Products, Department of Microbiology and 
  Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, 
  Chongqing, 400038, China; zhangjy198217@126.com (J.Z.); zeng1109@163.com (H.Z.); jianggu2012@163.com 
  (J.G.); lihaibo@tmmu.edu.cn (H.L.) 
  2 Laboratory of the Immune System Biology, National Institute of Allergy and Infectious Diseases, ; National 
  Institutes of Health, Bethesda, MD, 20892, USA; lzheng@niaid.nih.gov 
  * Correspondence:  lzheng@niaid.nih.gov (L.Z.); qmzou2007@163.com (Q.Z.) 
  Received: 11 March 2020; Accepted: 26 March 2020; Published: 29 March 2020 
  Abstract: In December 2019, the outbreak of pneumonia caused by a novel coro