This research was conducted by Prof. Qian Long, Yu Wang and team from Duke Kunshan University and published in Human Vaccines & Immunotherapeutics., It examines the administration of non-National Immunization Program (non-NIP) vaccines among children under six in rural Henan, based on a survey of 1,051 participants. The findings reveal that over a quarter of children had not received any non-NIP vaccines, with high costs and inadequate physician-caregiver communication being the main barriers.
Independent and joint associations of sex and birth order with non‑national immunization program vaccine coverage among Chinese children: a cross-sectional analysis
This research conducted by Prof. Xiaolin Xu and team from Zhejiang University, was published in the International Journal for Equity in Health. Based on a 2022 survey in Zhejiang and Henan provinces, the study analyzed the independent and joint associations of sex and birth order with non-National Immunization Program (non-NIP) vaccine coverage among Chinese children aged 1–6. The results showed that birth order was an important factor influencing vaccination, with the lowest coverage observed among later-born girls, particularly third or later-born daughters.