Study design and sample collection
Based on geographical distribution, Shandong Province was divided into three distinct regions, eastern (Qingdao, Yantai, Weifang, Weihai, and Rizhao), central (Jinan, Zibo, Dongying, Tai’an, and Linyi City) and…
Correlation analysis between positivity rate of immunoglobulin G antibodies against pertussis toxin among community-based populations and reported pertussis incidence in Shandong, China: a seven-year seroepidemiological study | BMC Infectious Diseases
