Breakthroughs Blog: Diagnostics

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. New study results show that combining antimalarial drugs with a vaccine, given just before peak transmission period of rainy season, could reduce malaria deaths in children by more than 70 percent. The trial—conducted over three years among 6,000 young children in Burkina Faso and Mali—tested the RTS,S malaria vaccine, the world’s first-developed shot for the disease, along with seasonal malaria chemoprevention (SMC), an existing preventative drug regimen. Results indicated the RTS,S vaccine was as effective as SMC when administered to children ahead of rainy season in countries with seasonal transmission—and that combining the two methods reduced cases by around 60 percent, hospitalizations by around 70 percent, and deaths by around 73 percent, when compared to SMC alone. The World Health Organization (WHO) is set to review evidence from the study in October.The International Vaccine Institute (IVI) and Bharat Biotech have launched a phase 2/3 trial for their chikungunya vaccine candidate. The two-dose vaccine, BBV87, is an inactivated whole virion vaccine, which showed “optimum immune response” in phase 1 studies in India. The phase 2/3 trial, led by IVI through the Global Chikungunya vaccine Clinical Development Program (GCCDP) in partnership with Bharat Biotech and supported by the Coalition for Epidemic Preparedness Innovations and the government of India’s epidemic preparedness initiative, Ind-CEPI, will test BBV87 for safety and immunogenicity in healthy adults. GCCDP aims to develop and manufacture an affordable chikungunya vaccine with the goal of achieving WHO prequalification to enable distribution in low- and middle-income countries. The trial has begun in Costa Rica and is set to expand to Panama, Colombia, Thailand, and Guatemala in the coming months.On Tuesday, the US Food and Drug Administration granted its first emergency use authorization for an at-home COVID-19 diagnostic that delivers results through the user’s smartphone. The Veritor rapid antigen test, developed by BD and Scanwell Health, involves swishing a nasal swab in a tube of liquid reagents, after which drops on a testing strip trigger colored lines, which are then read and interpreted by the smartphone. The diagnostic is designed for use by individuals ages 14 and up and can be used for children as young as two with samples collected by an adult. The digital test, which does not require a prescription, will initially be made available to employers, schools, and public health organizations looking to support routine screening programs.

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 first technology transfer hub for mRNA COVID-19 vaccines will be established in South Africa, the World Health Organization (WHO) announced last week. The hub will assist in scaling production of and access to doses across the African continent by providing training on mRNA technologies for manufacturers from low- and middle-income countries and licensing them for local production. The hub is still in the process of securing agreements with manufacturers of mRNA vaccines, the technology of which is potentially easier to scale than alternatives and could be faster and easier to adapt for COVID-19 variants of concern. If knowledge of the way to produce an existing mRNA COVID-19 vaccine is transferred to the new hub in South Africa, doses could be produced at the site in the next 9 to 12 months, according to WHO.Scientists at the University of Oxford will evaluate Ivermectin in a new clinical trial to prevent hospitalization among people with COVID-19 symptoms. Ivermectin, most commonly used to treat parasitic infections, has been promoted for use against COVID-19 in several regions despite a current lack of clinical data to support its use. There have been early, “promising” results from small and observational studies, but it would be “premature” to recommend Ivermectin for COVID-19, according to a researcher from the upcoming trial. The Oxford team said they selected Ivermectin to be included in the trial because it was readily available globally and known to be relatively safe.The US Food and Drug Administration granted emergency use authorization to a COVID-19 antibody test that uses mouth swabs, rather than blood samples, to detect the presence of IgA, IgG, and IgM antibodies. The rapid, saliva-based test, called CovAb, delivers a result within 15 minutes and does not require any additional hardware or instruments. The authorization allows the diagnostic to be used at the point of care among adults and children. In clinical trials, CovAb demonstrated a false-negative rate of less than 3 percent and a false-positive rate of nearly 1 percent when administered at least 15 days after the onset of symptoms, when the body’s antibody response reaches higher levels.

Becoming a mother can be one of the most rewarding experiences of a woman’s life—but unfortunately, it can also be one of the most dangerous. More than 290,000 women die each year in pregnancy and childbirth, with the vast majority of those deaths occurring in low-income countries.  For decades, the US Agency for International Development (USAID) has been supporting problem solvers to create simple, affordable solutions to protect mothers and their babies during birth. Here are ten amazing USAID-supported innovations to make motherhood safer:  Preeclampsia is a dangerous condition that impacts 1 in 20 pregnancies. Yet its symptoms, headaches and swelling, can be difficult to spot since they mimic those of routine pregnancy. To detect this condition early before it turns deadly, researchers at Ohio State University created the Congo Red Dot test. This inexpensive, easy-to-use test uses a specific red dye in paper that reacts to unique proteins in the urine of pregnant women with preeclampsia, delivering results in just three minutes. Postpartum hemorrhage (PPH), or excessive bleeding post birth, affects millions of women every year and can cause death within hours if left untreated. Too often, lifesaving deliveries of blood and emergency supplies are limited by inadequate transportation, communication, and supply chain infrastructure. To facilitate easy, affordable, and rapid delivery of essential health supplies, several global initiatives, including from Zipline and Matternet, are using unmanned aerial vehicles—or drones—to carry blood and other urgent medicines to rural health facilities.  Argentine car mechanic Jorge Odón was watching a YouTube video about how to remove a cork from inside a wine bottle, when he had an inspiring realization: the same technique could be used to help extract a baby’s head during obstructed labor. This idea led him to create the Odon Device, which uses a plastic sleeve, pumped with air, to safely cushion a baby’s head while it is sucked out. In partnership with BD, Odón is working to advance and test this simple, low-cost innovation that could make it safer and easier to deliver complicated births without the use of forceps or a vacuum extractor.  A uterine balloon tamponade (UBT) is a standard device used in high-income countries to stop postpartum bleeding by putting pressure on the walls of the uterus. But at a cost of hundreds of dollars for a single use, these devices were unaffordable in many low-resource settings. This led health workers to improvise their own devices made from a condom and rubber tubing. Inspired by this ingenuity, PATH and Sinapi created an optimized, quality-assured version of this “condom catheter” called the Ellavi UBT, which at $7.50 per unit is putting this lifesaving device within reach for women around the world.  Blood pressure (BP) disorders like preeclampsia are a leading cause of maternal death. BP cuffs have been used to monitor BP since the early 1900s, but they can be hard to maintain and read by less-skilled health workers. A startup named Biospectal is reinventing this approach with their OptiBP cuff-less smartphone app. By simply placing a finger on a smartphone camera and using the software, anyone anywhere in the world can transform their phone into an instant, medical-grade blood pressure monitoring device.  Blood donation shortages in low-resource communities can leave health workers with few options if a woman is hemorrhaging blood during childbirth. Attendants often resort to using improvised tools like a soup ladle and gauze to try to salvage and recycle a patient’s own blood. The Hemafuse pump, developed by Sisu Global Health, is a cost-effective, hygienic alternative. This innovative tool sucks up blood, filters it, and transfers it to a bag for transfusion back to the patient.  Healthy timing and spacing of pregnancies are critical to the health of mothers and their babies. To expand family planning options, the Population Council developed the long-acting Annovera contraceptive ring—the first and only contraceptive to provide a year of protection while fully under a woman’s control. The soft, reusable silicone ring can be inserted and removed by its user, providing women with the ease of a long-term method and control of a short-term method. The ring does not require refrigeration, making it particularly effective for distribution and use in low-resource settings.  Poor water and sanitation in low-resource health facilities can expose moms and their babies to dangerous infections at birth. Chlorine is a commonly used disinfectant, but supply chain issues make it hard for facilities to ensure a steady, reliable supply. To help address this problem, PATH and MSR Global Health created a portable, low-cost tool—the SafiStation Chlorine Generator—that can produce chlorine on site using just water, salt, and electricity.  In high-income countries, an infusion pump is a common technology used to intravenously deliver medications or fluids. But it requires electricity—a luxury not always present in maternity clinics worldwide. To solve for this challenge, PATH innovators sought to create a low-cost, rugged infusion pump that could function without electricity or batteries. After testing different tactics, they settled on a simple approach to power the device: a hand-powered bicycle pump. Called the RELI Delivery System—short for reusable, electricity-free, low-cost, infusion delivery—this innovative device can power a consistent fluid delivery rate, over the equivalent of one clinic shift, with just a few pumps.  PPH, the world’s leading cause of maternal mortality, overwhelmingly affects mothers in low- and middle-income countries. The gold standard therapy for prevention and treatment of PPH, oxytocin, currently exists only as an injection—requiring refrigeration and skilled health care workers for administration. The Monash Institute of Pharmaceutical Sciences, in partnership with Janssen Pharmaceutica NV and GlaxoSmithKline, is developing a heat-stable, inhaled form of oxytocin to improve access to this lifesaving therapy to women in low-resource settings.  Photos, from top: Ohio State University Wexner Medical Center, Paul Kagame, Ministerio de Ciencia, Sinapi Biomedical, Biospectal, Sisu Global Health, Bedsider Providers, PATH/Adam Drolet, PATH/Tom Furtwangler, Monash Institute of Pharmaceutical Sciences 

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 Africa Centers for Disease Control and Prevention, African Union Commission, and Coalition for Epidemic Preparedness Innovations have announced a partnership to enhance vaccine research, development, and manufacturing in Africa. The agreement, announced following a two-day virtual conference on African vaccine manufacturing, will seek to strengthen the COVID-19 response and outbreak preparedness, build on key lessons from COVID-19, and leverage the successes of procurement and distribution of vaccines by COVAX and the African Vaccine Acquisition Task Team. Through the initiative, the partner institutions also intend to invest in capacity strengthening and innovations to accelerate vaccine production, strengthen African scientific institutions, and build partnerships that enable sustainable expansion of vaccine manufacturing in Africa.Regeneron plans to request an expanded emergency use authorization from the US Food and Drug Administration for its COVID-19 antibody cocktail after new data indicated it can prevent disease in healthy individuals. In a phase 3 trial run jointly with the National Institutes of Health, the antibody therapy cut the risk of developing symptomatic COVID-19 by 81 percent among healthy individuals who lived with an infected person. The antibody cocktail is currently authorized as an intravenous infusion to minimize disease progression in sick patients; the new request would allow the drug to be administered as a single-dose subcutaneous injection and used as a preventative measure. If authorized, the antibody cocktail could play a practical role in COVID-19 protection measures, including after high-risk exposures and in immunocompromised individuals who may not respond well to vaccines, according to a company statement.Amid reports of rare blood clot–related side effects among individuals who received COVID-19 vaccines developed by AstraZeneca and Johnson & Johnson, researchers are investigating whether and how the vaccines are causing this adverse reaction. Two papers published in the New England Journal of Medicine described 16 patients who experienced this cerebral venous sinus thrombosis, tied to the AstraZeneca vaccine, and offered a partial explanation for a potential link, finding blood clots were seen in conjunction with high levels of antibodies to platelet factor 4. The finding provides a first step toward explaining the extremely rare side effect but does not explain why a vaccine might cause the immune system to produce those antibodies. Researchers plan to continue investigating the reaction, assessing the data, and monitoring cases alongside regulatory authorities.