Investigation of the wastage coefficient of group A meningococcal polysaccharide vaccine in Yongchuan District of Chongqing from 2022 to 2023
CHEN Yu, LAN Zhu, TANG Lei, ZOU Jingbo
Anhui Journal of Preventive Medicine . 2025, (5): 407 -410 .  DOI: 10.19837/j.cnki.ahyf.2025.05.013

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