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India Develops Indigenous Multi-Stage Malaria Vaccine

Why in News?

India is developing AdFalciVax, a new malaria vaccine candidate targeting Plasmodium falciparum, the deadliest malaria parasite. Spearheaded by ICMR and DBT-NII, it aims to prevent clinical malaria episodes and community transmission, supporting India’s Make in India initiative and malaria elimination strategy. This development marks a significant step towards creating the first malaria vaccine that addresses multiple stages of the parasite’s lifecycle.

About Vaccine Design and Purpose:

  • AdFalciVax is India’s first indigenous recombinant chimeric malaria vaccine.
  • It targets two key stages of the Plasmodium falciparum lifecycle, enhancing protective effectiveness as both a pre-erythrocytic vaccine and a blood-stage vaccine.
  • Designed to both prevent human infection and reduce parasite transmission in communities, acting as one of the promising transmission-blocking vaccines.
  • Supports India’s long-term goal of malaria elimination through local innovation in malaria control.
  • Aligned with the Make in India initiative for self-reliant health innovation.
  • Utilizes advanced structural vaccinology approaches to optimize antigen design and immune response.

Institutional Collaboration and Progress

  • Developed by Indian Council of Medical Research (ICMR) in collaboration with Department of Biotechnology–National Institute of Immunology (DBT-NII).
  • The vaccine has shown high efficacy in preclinical studies, demonstrating strong B cell responses and targeting the circumsporozoite protein.
  • Currently in early-stage research and not yet approved for clinical use, joining other malaria vaccine candidates in development.
  • Represents a major milestone in India’s vaccine research capabilities, particularly for high transmission settings.
  • Reinforces India’s growing contribution to global health R&D and malaria control efforts.
  • Shows potential for providing heterologous protection against different malaria strains.

Licensing and Outreach Strategy

  • ICMR plans to license the AdFalciVax technology to eligible manufacturers under non-exclusive agreements.
  • This model allows for broader development, manufacture, and public health outreach.
  • Encourages multiple production sources to ensure availability and affordability, potentially impacting childhood immunization schedules in endemic regions.
  • Reflects India’s approach to open-access health innovation for maximum impact.
  • Highlights importance of public sector leadership in vaccine innovation and access, contributing to the global malaria elimination strategy.
  • Aims to address various forms of malaria, including pregnancy-associated malaria, through comprehensive vaccine design.
About Malaria

Cause: Malaria is caused by the Plasmodium parasite, transmitted through bites of infected female Anopheles mosquitoes.

Types affecting humans (5 types):

Plasmodium falciparum: Most deadly, prevalent in Africa.

Plasmodium vivax: Found in Asia & South America, can cause relapses from liver.

Plasmodium ovale: Rare, seen in West Africa, may stay dormant for years.

Plasmodium malariae: Rare, mostly in Africa.

Plasmodium knowlesi: Very rare, found in Southeast Asia.

Transmission:

Parasite enters bloodstream via mosquito bite, travels to liver, multiplies, then invades red blood cells (RBCs).

Infected RBCs burst, releasing more parasites.

Mosquitoes biting infected individuals can further spread it.

Not spread: Malaria is not transmitted directly from person to person.

Symptoms:

Fever, chills, headache, nausea, vomiting, diarrhea, abdominal pain, fatigue, muscle pain, rapid heartbeat, and cough.

Pregnancy-associated malaria: A severe form that can lead to maternal anemia, low birth weight, and increased risk of infant mortality.