Status: affected by circulating vaccine-derived poliovirus
Circulation of vaccine-derived poliovirus type 1 (cVDPV1) has been confirmed in Indonesia.
The detection of cVDPV1 underscores the importance of maintaining high routine vaccination coverage everywhere to minimize the risk and consequences of any poliovirus circulation as well as the need to ensure quality surveillance for early detection of any polioviruses. These events also underscore the risk posed by any low-level transmission of the virus. A robust outbreak response is needed to rapidly stop circulation and ensure sufficient vaccination coverage in the affected areas to prevent similar outbreaks in the future. WHO will continue to evaluate the epidemiological situation and outbreak response measures being implemented.
Polio this week in Indonesia
- A new circulating vaccine-derived poliovirus type 1 (cVDPV2) outbreak has been confirmed in Indonesia.
- Two genetically-linked circulating vaccine-derived poliovirus type 1 (cVDPV1) isolates were detected, from an acute flaccid paralysis (AFP) case (with onset of paralysis on 27 November 2018), and from a healthy community contact, in Papua province. This outbreak is not linked to the cVDPV1 currently affecting neighbouring Papua New Guinea. .
- The GPEI and partners are working with country counterparts to support the local public health authorities in conducting a field investigation (clinical, epidemiological and immunological) and thorough risk assessment to discuss planning and implementation of immunization and outbreak response.
- Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
International Health Regulations
Countries affected by poliovirus transmission are subject to International Health Regulations Temporary Recommendations that request them to declare a case of polio as a national public health emergency and consideration vaccination of all international travellers, as per temporary recommendations issued as of February 2019.
WHO’s International Travel and Health recommends that all travellers to polio-affected areas be fully vaccinated against polio. Residents (and visitors for more than 4 weeks) from infected areas should receive an additional dose of OPV or inactivated polio vaccine (IPV) within 4 weeks to 12 months of travel.
More on vaccine-derived polioviruses