High coverage and timeliness of vaccination of children under 6 years of age in Risaralda, Colombia by Jorge Enrique Machado-Alba, Manuel Enrique Machado-Duque, Juan C. Vargas-Zambrano

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Pertussis vaccine effectiveness following country-wide implementation of a hexavalent acellular pertussis immunization schedule in infants and children in Panama by Arlene E. Calvo, Andrea G. Tristán Urrutia, Juan C. Vargas-Zambrano, Humberto López Castillo

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Timeliness for vaccination according to the expanded immunization program in children under 6 years of age in Colombia between 2014 and 2019 by Jorge Enrique Machado-Alba, Manuel Enrique Machado-Duque, Andrés Gaviria-Mendoza, Juan C. Vargas-Zambrano

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Effect of the interval between birth and second dose of hepatitis B vaccine on perinatal transmission of hepatitis B virus by Tae Un Yang, Juan C. Vargas-Zambrano, Hang A Park, Chae Won Jung, Dongwook Kim, Youngmee Jee

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Impact of COVID-19 on routine immunisation in South-East Asia and Western Pacific: Disruptions and solutions by Rebecca C. Harris, Yutao Chen, Pierre Côte, Antoine Ardillon, Maria Carmen Nievera, Anna Ong-Lim, Somasundaram Aiyamperumal, Chan Poh Chong, Kiruthika Velan Kandasamy, Kuharaj Mahenthiran, Ta-Wen Yu, Changshu Huang, Clotilde El Guerche-Séblain, Juan C. Vargas-Zambrano, Ayman Chit, Gopinath Nageshwaran

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