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Posted 16 Sep 2024

2 min read

MVA-BN vaccine from the Danish pharmaceutical company Bavarian Nordic was prequalified by the WHO. 

  • The vaccine can be given to people 18 years and older and has already been approved in Europe and US.
  • Single-dose given before exposure has around 76% effectiveness (and double dose has around 82% effectiveness).

About WHO Vaccine Prequalification (PQ)

  • Genesis: It was created in 1987 to assure the quality of vaccines distributed by UN purchasing agencies.
  • WHO List of Prequalified Vaccines: Vaccines showing positive outcomes after evaluation of relevant data, testing of samples and WHO inspection of relevant manufacturing sites are included in the list.
    • However, inclusion in the list does not imply approval of vaccines and manufacturing sites by the WHO. 
    • Such approval is a prerogative of the National Regulatory Authorities (NRAs).

Significance of WHO Vaccine Prequalification

  • Contributes significantly to WHO Expanded Programme on Immunization which seeks to ensure universal access to all relevant vaccines for all populations at risk.
  • Helps to accelerate vaccine procurement by governments & international agencies such as vaccine alliance GAVI & UN Children’s Fund (UNICEF). 
  • Helps NRAs to fast-track approvals. 

About Mpox

Previously known as monkeypox, Mpox is a zoonotic disease (spread between animals & people). 

  • Pathogen: Monkeypox virus (MPXV), an enveloped double-stranded DNA virus of the Orthopoxvirus genus. 
  • Discovery: Discovered in Denmark (1958) in monkeys kept for research, and first reported human case was a nine-month-old boy in DRC Congo (1970). 
  • Transmission: Through close contact with affected person or animal, from mother to foetus (during During pregnancy), etc. 
  • Symptoms: Skin rash or mucosal lesions accompanied by fever, headache, swollen lymph nodes, etc.
  • WHO response: Mpox is declared as a public health emergency of international concern (in 2022 and 2024). 
  • Tags :
  • Mpox
  • WHO Vaccine Prequalification
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