Detection of Immunity Gap before Measles Outbreak, Ho Chi Minh City, Vietnam, 2024.
Ong T., Thuy CT., Tam NH., Nga LH., Uyen NTV., Lan TTT., Tran A., Diem LTK., Khang HP., Dung DTX., Chuong LN., Tam NHT., Giang VC., Cam TTB., Anh HTN., Thu PTM., Man DNH., Dung NT., Tung NLN., Phat HH., Toan LM., Lam NT., Nguyen PNT., Nhung HN., Thanh TT., Chau NVV., Thuong TC., Thwaites G., Thwaites CL., Choisy M., Van Tan L.
In 2022, we established a residual sample serosurveillance program in Ho Chi Minh City, Vietnam. During September 2022-April 2024, we found low measles antibody seroprevalence in children in the city's western region, where a measles outbreak began in May 2024. Serosurveillance could be a useful tool for outbreak prediction and prevention.