Microsoft Word 02Preface doc

1)
 
Potency Testing of EPI Vaccines 
In Ghana, EPI vaccines were transported inappropriately in the late 1980s due to the 
undeveloped cold chain system.     
To support WHO’s polio eradication program, the NMIMR monitored the distribution 
process of imported EPI vaccines and conducted potency tests on the vaccines.    The 
results showed that imported vaccines had deteriorated; the vaccine potency was lower 
than the WHO standard.  WHO has recognised the inappropriate transportation 
conditions for EPI vaccines.  Subsequently, WHO established a tracing system for 
quality control of the transported vaccines.     
The NMIMR contributes to the effective implementation of EPI through the quality 
control of EPI vaccines by conducting monitoring and potency testing of the EPI 
vaccines.  The NMIMR still conducts potency testing of EPI vaccines based on 
requests from the MOH.   
 

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