CURRENT STATUS OF SEASONAL INFLUENZA VACCINATION AND ASSOCIATED FACTORS AMONG CHILDREN AGED 6 MONTHS TO UNDER 5 YEARS AT PHU THO PROVINCIAL CHILDREN’S HOSPITAL IN 2022. YHCĐ [Internet]. 2026 July 6 [cited 2026 Sept. 9];67(CĐ7-Trường ĐH Y Dược Hải Phòng). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5640