1. Ariff, I., 2021. Is the Vaccine Rollout as Slow as it Seems? Yes and no. 〈https://www.freemalaysiatoday.com/category/nation/2021/05/06/is-the-vaccine-rollout-as-slow-as-it-seems-yes-and-no/〉 (Accessed 28 May 2021).
2. Hospitalisation associated with SARS-CoV-2 delta variant in Denmark;Bager;Lancet Infect. Dis.,2021
3. Batumalai, K., 2021. Malaysia Considers Palliating Covid-19 Patients If Epidemic Worsens. 〈https://codeblue.galencentre.org/2021/05/25/malaysia-considers-palliating-covid-19-patients-if-epidemic-worsens/〉 (accessed 23 May 2021).
4. Rational policymaking during a pandemic;Berger;Proc. Natl. Acad. Sci>,2021
5. Bernama, 2021. Malaysia has procured enough vaccine for 38.5 mil people, says CITF. 〈https://www.theedgemarkets.com/article/malaysia-has-procured-enough-vaccine-385-mil-people-says-citf〉 (accessed 28 May 2021).