Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2009 Sep 18;58(36):1002-6.

Update on vaccine-derived polioviruses--worldwide, January 2008-June 2009

Centers for Disease Control and Prevention (CDC)
  • PMID: 19763076
Free article

Update on vaccine-derived polioviruses--worldwide, January 2008-June 2009

Centers for Disease Control and Prevention (CDC). MMWR Morb Mortal Wkly Rep. .
Free article

Abstract

In 1988, the World Health Assembly resolved to eradicate poliomyelitis worldwide. Subsequently, the Global Polio Eradication Initiative of the World Health Organization (WHO) reduced the global incidence of polio associated with wild polioviruses (WPVs) from an estimated 350,000 cases in 125 countries in 1988 to 1,651 reported cases in 2008 and reduced the number of countries that have never interrupted WPV transmission to four (Afghanistan, India, Nigeria, and Pakistan). Under current WHO plans, when the goal of eradicating all WPV transmission is attained, oral poliovirus vaccine (OPV) use worldwide eventually will be discontinued. However, because vaccine-derived polioviruses (VDPVs) can produce polio outbreaks in areas with low rates of Sabin OPV coverage and can replicate for years in immunodeficient persons, enhanced strategies are needed to limit emergence of VDPVs. This report updates previous summaries and describes VDPVs detected worldwide during January 2008-June 2009. During this period, 1) two new outbreaks of circulating VDPVs (cVDPVs) (accounting for 4-20 cases) were identified in the Democratic Republic of Congo and Ethiopia; 2) a previously identified outbreak in Nigeria ultimately resulted in a cumulative total of 292 cases; 3) two newly identified paralyzed immunodeficient persons in Argentina and the United States were found to excrete VDPVs; and 4) isolated VDPVs were found among persons and environmental samples in 11 countries. All countries need to maintain 1) high rates of poliovirus vaccination coverage to prevent VDPV spread and 2) sensitive poliovirus surveillance to detect VDPVs.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

MeSH terms

Substances