CJCP     2021 23 (2):  138-142    ISSN: 1008-8830  CN: 43-1301/R Effect of pertussis vaccination on clinical manifestations of infants and young children with pertussis TANG Qi-Qin, GAN Chuan, WU Xiao-Ying, XU Hong-Mei, ZHANG Zhen-Zhen Department of Infection, Children's Hospital, Chongqing Medical University/Ministry of Education Key Laboratory of Child Development and Disorders/National Clinical Research Center for Child Health and Disorders(Chongqing)/China International Science and Technology Cooperation Base of Child Development and Critical Disorders/Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China Received: 2020-08-14  Revised: 2020-11-13  Online: null Supporting info