See, W., Ng, Y.K., Cui, L., Kita, Y., Ooi, S.P.-L., Lee, V., Heng, D.M.K. and Lin, R.T.P. 2021. Singapore’s efforts to achieve measles elimination in 2018. Western Pacific Surveillance and Response. 12, 3 (Jul. 2021), 12. DOI:https://doi.org/10.5365/wpsar.2019.10.4.002.