Novel oral poliovirus vaccine type 2 (nOPV2), a more genetically stable vaccine than Sabin OPV2, was developed to address the risk for reversion to neurovirulence and became available in 2021. During 2016–2020, immunization responses to cVDPV2 outbreaks required use of Sabin-strain monovalent OPV2, but new VDPV2 emergences could occur if campaigns did not reach a sufficiently high proportion of children. Following declaration of the eradication of wild poliovirus type 2 in 2015 and the global synchronized switch from trivalent OPV (tOPV, containing Sabin-strain types 1, 2, and 3) to bivalent OPV (bOPV, containing types 1 and 3 only) for routine immunization activities † in April 2016 ( 3), cVDPV type 2 (cVDPV2) outbreaks have been reported worldwide ( 4). Global Polio Eradication Initiative website.Circulating vaccine-derived poliovirus (cVDPV) outbreaks* can occur when oral poliovirus vaccine (OPV, containing one or more Sabin-strain serotypes 1, 2, and 3) strains undergo prolonged circulation in under-vaccinated populations, resulting in genetically reverted neurovirulent virus ( 1, 2). the Australian Government Department of Health.Information about travelling to polio outbreak areas is available at: Travellers to countries with polio outbreaks should check their vaccination records and consult their general practitioner (GP) or travel doctor regarding their vaccination requirements.Įveryone travelling to one of these areas should have completed a three dose course of polio vaccine and had a booster dose – the timing depends on how long ago you were vaccinated and how long you are staying. Polio is very unlikely to spread in Australia because of our high rates of vaccine coverage, good sanitation, and the ability of the health system to respond to cases. The PNG Government is working with partners, including WHO and UNICEF, to take appropriate outbreak response measures including contact tracing, testing and vaccination. On 22 June 2018, the Government of Papua New Guinea (PNG) notified WHO of an outbreak of circulating vaccine-derived poliovirus. 2018-19 outbreak of polio in Papua New Guinea The Indonesian Ministry of Health, supported by WHO, is undertaking contact tracing and testing as well as strengthened disease surveillance and polio vaccination of children in the Papua Province. While this Indonesian province shares a border with Papua New Guinea, this outbreak is not linked to the outbreak currently affecting Papua New Guinea. On 12 February 2019, circulating vaccine-derived poliovirus type 1 (cVDPV1) was confirmed in the Papua Province of Indonesia (Papua Province). 2019 outbreak of polio in Papua Province, Indonesia The Government of the Philippines, supported by partners of the Global Polio Eradication Initiative, UNICEF and the World Health Organization (WHO), are undertaking detailed investigations, enhancing surveillance, strengthening routine immunization and implementing an outbreak response. Environmental samples genetically linked to this case have also been isolated in Manila and Davao City in 2019. The Philippine Department of Health announced an outbreak of polio in the country on 19 September 2019. On 14 September 2019 a case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was confirmed on the island of Mindanao in the southern Philippines. 2019 outbreak of polio in the Philippines If you are travelling overseas don’t run the risk of getting polio – make sure your vaccinations are up-to-date, including boosters, before you go.
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