New malaria vaccine found 100% effective – Short note for UPSC 2017

Home » New malaria vaccine found 100% effective – Short note for UPSC 2017

New malaria vaccine found 100% effective – Short note for UPSC 2017

New malaria vaccine found 100% effective – Short note for UPSC 2017 -A new vaccine for malaria is up to 100% effective when assessed at 10 weeks after last dose, according to the results of a clinical trial.

The vaccine called Sanaria PfSPZ-CVac incorporated fully viable — not weakened or otherwise inactivated — malaria pathogens together with the medication to combat them.

New malaria vaccine found 100% effective - Short note for UPSC 2017

How Malaria Transmitted by Mosquitos ?

  • Malaria parasites are transmitted by the bite of female Anopheles mosquitoes.
  • The Plasmodium falciparum parasite is responsible for most malaria infections and almost all deaths caused by the disease worldwide.

Important Updates About Vaccine and research 

 

  1. The Plasmodium falciparum parasite is responsible for most malaria infections and almost all deaths caused by the disease worldwide.
  2. Most of the previous vaccines which have been tried involved the use of individual molecules found in the pathogen. However, they were unable to provide sufficient immunity to the disease.
  3. The study by University of Tubingen in Germany in collaboration with the biotech company Sanaria involved 67 healthy adult test persons, none of whom had previously had malaria.
  4. The best immune response was shown in a group of nine test persons who received the highest dose of the vaccine three times at four-week intervals.
  5. That protection was probably caused by specific T-lymphocytes and antibody responses to the parasites in the liver.
  6. The researchers analysed the bodies’ immune reactions and identified protein patterns which will make it possible to further improve malaria vaccines, Professor Kremsner added.
  7. They injected live malaria parasites into the test subjects, at the same time preventing the development of the disease by adding chloroquine — which has been used to treat malaria for many years.
  8. This enabled the researchers to exploit the behaviour of the parasites and the properties of chloroquine.
  9. Once the person is infected, the Plasmodium falciparum parasite migrates to the liver to reproduce.
  10. Malaria only breaks out when the pathogen leaves the liver, entering the bloodstream and going into the red corpuscles, where it continues to reproduce and spread.
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