共 12 条
[5]
KEJA K, 1988, World Health Statistics Quarterly, V41, P59
[6]
Maurice J., 2009, Unicef State of the Worlds Vaccines and Immunization, V3rd ed.
[7]
Rahman Azizur, 2019, Demography India, V48, P74
[9]
WHO, 2013, WORLD MALARIA REPORT 2013, P1
[10]
World Health Organization, 2020, At least 80 million children under one at risk of diseases such as diphtheria, measles and polio as COVID-19 disrupts routine vaccination efforts, warn Gavi, WHO and UNICEF