Abstract
Malaysia started the polio immunization programme since 1972 and achieved polio-free
 certification in 2000. After 27 years from the last reported polio case in 1992, on 8 December
 2019, the Ministry of Health Malaysia announced the return of polio into the country when
 the first polio case detected in Sabah involving a 3-month-old male child (Abdullah, N.H.,
 2019). The child confirmed to be infected with vaccine-derived poliovirus type 1 (VDPV1)
 which later classified as a circulating vaccine-derived poliovirus type 1 (cVDPV1). Further
 test confirmed that the virus is genetically linked to poliovirus (PHL-NCR-2) circulating in
 the southern Philippines (Alleman, M.M. et al., 2020). To date, a total of four polio cases
 were confirmed in Sabah of which due to vaccine-derived poliovirus type 1 (VDPV1). The
 vaccine-derived poliovirus type 2 (VDPV2) was also detected from environmental samples
 taken from various locations in Sabah.
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