Laboratory surveillance for wild and vaccine-derived polioviruses, January 2002-June 2003

Area of Science:

• Global Health
• Infectious Disease Surveillance
• Virology

Background:

• The Global Laboratory Network for Poliomyelitis Eradication was established by the World Health Organization (WHO) following a 1988 resolution to eradicate poliomyelitis.
• This network is a crucial part of the international surveillance system for detecting polioviruses.
• Laboratory investigation of stool samples from individuals with acute flaccid paralysis (AFP) is central to this surveillance.

Purpose of the Study:

• To summarize the performance of the Global Laboratory Network for Poliomyelitis Eradication.
• To describe the geographical distribution and characteristics of wild poliovirus (WPV) and vaccine-derived poliovirus (VDPV).
• To provide data relevant to ongoing global polio eradication efforts.

Main Methods:

• Analysis of laboratory network performance data.
• Characterization and geographical mapping of poliovirus isolates (WPV and VDPV).
• Review of surveillance data from January 2002 to June 2003.

Main Results:

• The report details the operational performance of the laboratory network during the specified period.
• It identifies the locations and characterizes the types of wild poliovirus (WPV) and vaccine-derived poliovirus (VDPV) detected.
• Findings inform the ongoing global strategy for polio eradication.

Conclusions:

• The Global Laboratory Network is essential infrastructure for guiding polio eradication.
• Continued national government and partner agency support is necessary for achieving and maintaining global polio eradication.
• Effective laboratory surveillance is critical for monitoring poliovirus circulation and informing eradication strategies.