The New WHO Causality Assessment Algorithm Needs Revision to Restore Public Trust: Given these apparent anomalies, the new WHO’s algorithm for causality assessment of [Adverse Event Following Immunization] AEFI is not fit for purpose and it fails to inspire confidence that it can identify new, uncommon AEFI. It will erode faith not only in the immunisation programme but also the public’s trust in their physicians.
Reference:
WHO. The Causality assessment of an adverse event following immunization (AEFI): User manual for the revised WHO classification. WHO/HIS/EMP/QSS. March 2013. Available at https://www.who.int/vaccine_safety/publications/aevi_manual.pdf?ua51. Accessed on 1/6/19
CIOMS/WHO. Definitions and Application of Terms for Vaccine
Pharmacovigilance Report of CIOMS/ WHO Working Group on Vaccine
Pharmacovigilance. Available at https://www.who.int/vaccine_safety/initiative/tools/CIOMS_report_WG_vaccine.pdf. Accessed on 1/6/19
WHO. Adverse Events Following Immunization (AEFI): Causality Assessment (2005) Available at http://www.rho.org/files/rb3/AEFI_Causality_Assessment_WHO_2005.pdf Accessed on 1/6/19
