Breakthroughs Blog: Malaria

Malaria is one of the world’s oldest and deadliest diseases. Thanks to international efforts to develop and scale up prevention tools and treatments, significant gains have been made over the past few decades in fighting this dangerous disease. But challenges, such as growing drug and insecticide resistance, climate change, and disruptions from COVID-19, have hampered control efforts. While both malaria cases and deaths steadily declined from 2000 to 2019, since then, cases have been on the rise and reported deaths have not returned to pre-pandemic levels—indicating progress against the disease has stalled and underscoring the need for continued research and development of new tools.In recognition of World Malaria Day, test your knowledge of this deadly disease and the innovations being advanced to end malaria:

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. The Combating Antibiotic Bacteria Biopharmaceutical Accelerator (CARB-X) last week announced that it will award up to $1 million to the company Scout to develop a rapid, inexpensive, and easy-to-use point-of-care diagnostic test for gonorrhea, which could expand access to testing and proper treatment in the face of a rise in gonorrhea cases and drug-resistant gonorrhea cases globally, especially in low- and middle-income countries. The test, STI-Scout, is designed to detect and differentiate between Neisseria gonorrhoeae and Chlamydia trachomitis and can provide results in only 30 minutes using urine samples or vaginal swabs at less than half the cost of other available tests. The test uses a proven isothermal technology that was validated for SARS-CoV-2 detection. Last week, EuBiologics and the International Vaccine Institute (IVI) announced that the World Health Organization (WHO) had prequalified Euvichol-S, an improved oral cholera vaccine produced with a simplified method that will hopefully help to address the rise of cholera outbreaks globally and a dire vaccine supply shortage. The vaccine, whose development was supported by the Bill & Melinda Gates Foundation, is produced in a way that can improve formulation and manufacturing productivity by 40 percent compared to the company’s prior oral cholera vaccine and demonstrated efficacy in a Phase 3 trial in Nepal last year. The prequalification paves the way for United Nations agencies and Gavi, the Vaccine Alliance, to buy the vaccine for countries experiencing outbreaks.The New Nets Project, funded by Unitaid and The Global Fund to Fight AIDS, Tuberculosis and Malaria, recently reported results from several pilot studies showing that a pair of second-generation bed nets tested in malaria-endemic areas helped to prevent up to 13 million additional cases of malaria, saving close to 25,000 lives—exciting news that comes as malaria cases, as well as resistance to the standard insecticide used to treat nets, rise globally. The studies found that the new nets, the Interceptor G2 and Royal Guard—which both use dual insecticides to address resistance—were between 20 and 50 percent more effective than traditional nets, which only use pyrethroid insecticide, in reducing mosquito exposure and reduced the risk of infection by up to 55 percent. Although the new nets are more expensive, the additional cost seems to be offset by the public health savings of malaria prevention. Researchers expect malaria parasites to eventually become resistant to the new nets, highlighting the need for continued research into other methods of vector control, as well as ensuring population-scale protection through vaccination.

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. Last Tuesday, Valneva announced the launch of a Phase 1 clinical trial to investigate the safety and immunogenicity of a vaccine against the Zika virus, for which there are currently no available preventable vaccines or treatments. The second-generation adjuvanted inactivated vaccine candidate, VLA1601, will be tested in 150 adult participants in the United States, with the first topline data from the trial expected as soon as early next year.  Numerous outbreaks of Zika have occurred around the world, but the virus is currently circulating in Mexico, Central and South America, the Caribbean region, and some areas of the continental United States.Moderna’s next-generation mRNA vaccine for COVID-19 elicited a higher immune response against most strains of omicron BA.4/BA.5 and the original virus than the company’s currently licensed vaccine and has a similar safety profile in Phase 3 trial. The vaccine candidate, mRNA-1283, demonstrated the highest benefits in patients over 65, who are at risk of more severe disease. The trial included over 11,000 patients from across the United States, the United Kingdom, and Canada. These results also point to the future promise of the company’s combination mRNA vaccines for COVID-19 and influenza, which are also currently in development and previously demonstrated a similar immune response to the company’s vaccines for COVID-19.The US Food and Drug Administration (FDA) recently announced the approval of Roche’s Cobas malaria test for screening blood, organ, and tissue donors, which could help reduce the risk of transfusion-transmitted malaria. The test is designed to qualitatively detect in whole-blood samples Plasmodium DNA and RNA from the five main species of Plasmodium parasite species known to cause human infection: P. falciparum, P. malariae, P. vivax, P. ovale, and P. knowlesi. Roche’s technology is now the first FDA-licensed test for screening blood donors for malaria.

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. A phase 3 trial testing a new malaria drug could offer hope for addressing the burden of malaria in babies, which despite being a leading cause of death across Africa, is often underdiagnosed, mistreated, and not studied in this population. There are no malaria treatments for babies weighing under 11 pounds (about three months old or younger), whose cases also often go undiagnosed because malaria presents differently and can easily be mistaken for common childhood illnesses in children this young or they have not even been tested due to resource shortages. Clinical trials, including those for the RTS,S and R21 malaria vaccines, often exclude children under five months because of the assumption that mothers confer immunity. The ongoing trial, which is supported by the PAMAfrica Consortium and co-funded by the European & Developing Countries Clinical Trials Partnership and Medicines for Malaria Venture, is expected to publish results early next year.The Novo Nordisk Foundation has announced a new initiative, developed with the University of Copenhagen, that will invest up to $260 million to create new or improved vaccines for serious respiratory diseases. It is the first global vaccines initiative to solely focus on how to produce immunity in the airway itself as a way to prevent airborne disease infection. The initiative will initially focus on candidates for tuberculosis, the flu, and Group A Streptococcus. The partners hope that the new project can help to address the rise of antimicrobial resistance, which is driven, in part, by the overuse or misuse of antibiotics to treat airway infections, as well as to address the high death toll globally from these diseases.The European Medicines Agency Committee for Medicinal Products for Human Use recently adopted a positive scientific opinion for the investigational drug arpraziquantel for schistosomiasis, a neglected tropical disease that affects more than 240 million people globally, including 50 million preschool-aged children. There is no child-friendly schistosomiasis medication for preschool-aged children, despite safe and effective treatments available for both adults and school-aged children. The Global Health Innovative Technology (GHIT) Fund has supported the Pediatric Praziquantel Consortium’s development of the drug since 2013 and is now working with the consortium’s implementation research program to prepare for the introduction of the drug in endemic African countries to ensure equitable and sustainable access in the countries where it is most needed.