New users Circulating vaccine-derived poliovirus

New users Circulating vaccine-derived poliovirus 

Circulating vaccine-derived poliovirus

New users Circulating vaccine-derived poliovirus 

In the DRC, they confirmed two PcDSV type 2 vaccines (cVDPV2s). PVDVc2 the first strain was isolated from two cases of acute flaccid paralysis (AFP) in two districts of Upper Lomami province, with paralysis on 20 February and 8 March 2017. The second strain was isolated from PVDVc2 Maniema province, AFP cases (with paralysis on April 18th and May 8th, 2017) and healthy contact in the community.

Public Health Response

The Ministry of Health, supported by WHO and partners in the Global Polio Eradication Initiative (GPEI), carried out a risk assessment, including the assessment of the immunity of the population And the risk of spread.

They are in the process of finalizing the epidemic's response plans, which must strengthen surveillance, including actively investigating additional cases of AFP and complementary vaccination activities with monovalent oral vaccine against type 2 (mOPV2) Poliomyelitis in accordance with internationally agreed protocols to the epidemic.

Surveillance and immunization activities are being strengthened in neighboring countries.

WHO Risk Assessment

WHO assesses the risk that the national spread of these strains is high and the risk of international spread is moderate.

PVDVc2 emphasizes the importance of Detecting the routine of high immunization coverage everywhere, to minimize the risks and consequences of any poliovirus movement. These events also highlight the risk of low-level transmission of the virus. A robust response to the epidemic begins to quickly stop the movement and ensure sufficient vaccination coverage in the affected areas to prevent possible flare-ups of similar needs. WHO will continue to assess the epidemiological situation and the response measures that have been implemented.

Council of the WHO

It is important that all countries, especially those traveling frequently and contacts with polio-affected countries and regions, strengthen surveillance of AFP cases quickly detect any new import of viruses and facilitate a rapid response. Countries, territories and regions should also keep routine immunization coverage uniformly high at the district level to minimize the consequences of any new introduction of the virus.

International Travel and Health Organization recommends that all travelers in poliomyelitis-affected areas be vaccinated against polio. Residents and visitors (for more than four weeks) from infected areas should receive an additional dose of OPV or polio inactivated vaccine (IPV) within four weeks to 12 months of travel. In the opinion of the Emergency Committee convened under the International Health Regulations (2005), efforts to limit the international spread of poliovirus remain a public health emergency of international concern (USPI). Countries affected by poliovirus transmission are subject to temporary recommendations. In response to the temporary recommendations issued under the USPI, polio infection must declare the epidemic as a national public health emergency and consider vaccinating all international travelers