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Multiple malaria vaccine offers protection to people most at risk

Date:
October 27, 2011
Source:
University of Edinburgh
Summary:
A new malaria vaccine could be the first to tackle different forms of the disease and help those most vulnerable to infection, a study suggests.

A new malaria vaccine has been created to target different forms of the disease and help those most at risk.

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The parasites that cause malaria come in many different forms. This new vaccine works by triggering a range of antibodies to fight the different malaria parasites.

Many existing vaccines target only a limited part of the parasite population, making them less effective.

Combined protection

Scientists at the University created the vaccine by combining multiple types of a key protein found in many different parasite types.

During infection the production of antibodies is triggered by this protein. Mixing multiple proteins induces antibodies against a wide range of malaria parasites.

Tests have shown that antibodies targeting this key protein offer improved protection against the disease. It has also been shown to be effective in animals.

Helping those at risk

Owing to the many different types of parasites, the only way to gain natural immunity to all these forms is to catch multiple strains of the illness.

A vaccine that overcomes this would be most useful to children and other vulnerable populations.

"Our approach is novel because it combines multiple antibody targets from different parasite types, giving broader protection. This could prove to be a useful vaccine," said the study's corresponding author, Dr. David Cavanagh of the University of Edinburgh's School of Biological Sciences.

Widespread infection

Malaria is spread by mosquito bites and affects people and animals. According to the World Health Organisation the disease affected 225 million people in 2009 and caused an estimated 781 000 deaths. Those affected were mostly children in sub-Saharan Africa.

The study, published by PLoS ONE, was supported by the European Commission.


Story Source:

The above story is based on materials provided by University of Edinburgh. Note: Materials may be edited for content and length.


Journal Reference:

  1. Graeme J. M. Cowan, Alison M. Creasey, Kelwalin Dhansarnsombut, Alan W. Thomas, Edmond J. Remarque, David R. Cavanagh. A Malaria Vaccine Based on the Polymorphic Block 2 Region of MSP-1 that Elicits a Broad Serotype-Spanning Immune Response. PLoS ONE, 2011; 6 (10): e26616 DOI: 10.1371/journal.pone.0026616

Cite This Page:

University of Edinburgh. "Multiple malaria vaccine offers protection to people most at risk." ScienceDaily. ScienceDaily, 27 October 2011. <www.sciencedaily.com/releases/2011/10/111026175331.htm>.
University of Edinburgh. (2011, October 27). Multiple malaria vaccine offers protection to people most at risk. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2011/10/111026175331.htm
University of Edinburgh. "Multiple malaria vaccine offers protection to people most at risk." ScienceDaily. www.sciencedaily.com/releases/2011/10/111026175331.htm (accessed December 20, 2014).

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