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New Indian Express
a day ago
- Health
- New Indian Express
AdFalciVax: India's shot at stopping malaria on its tracks
India will soon have an advanced vaccine against malaria. In a major scientific breakthrough, the Indian Council of Medical Research (ICMR) has developed an innovative recombinant, chimeric multi-stage malaria vaccine that could transform malaria prevention and control efforts in India and globally. Named AdFalciVax, the vaccine has been developed to offer both protection against Plasmodium falciparum infection in humans and interruption of community transmission, unlike the existing two vaccines that can partially prevent infection in humans but cannot stop transmission in the community. The novel vaccine developed by Regional Medical Research Centre (RMRC), Bhubaneswar, one of the constituent institutes of ICMR, is now ready for technology transfer to manufacturers or organisations for production, clinical trials and its commercialisation. Preliminary trials on animal models have been highly successful. The pre-clinical validation of the vaccine has been conducted in collaboration with National Institute of Malaria Research (NIMR), another constituent institute of ICMR, and National Institute of Immunology (NII), New Delhi, an autonomous research institute of the Department of Biotechnology, Government of India. A dual-stage game changer Unlike the currently available WHO-recommended vaccines - RTS, S/AS01 (Mosquirix), and R21/Matrix-M which have shown efficacies ranging between 33% and 67%, AdFalciVax promises dual-stage protection. It will not only shield people from contracting the deadliest strain of malaria but also prevent its spread within communities, considered an essential factor in breaking the chain of transmission. Dr Susheel Singh, scientist-D at RMRC, said AdFalciVax deploys a full-length PfCSP (circumsporozoite protein), a key surface antigen of P falciparum, for broader immune protection. It also incorporates a novel fusion of Pfs230 and Pfs48/45 proteins to induce potent transmission-blocking antibodies. 'The new vaccine can prevent human infection and interrupts transmission in the community, thereby tackling two critical developmental bottlenecks in the malaria parasite's life cycle,' Dr Singh said. The RMRC researchers said the vaccine has been developed using advanced protein engineering techniques and it leverages Lactococcus lactis, a safe bacterial host system, for antigen production. Additional director general of ICMR and director of RMRC Dr Sanghamitra Pati said preclinical trials conducted on mice showed robust and long-lasting immunity, even when exposed to 10,000 dual-transgenic Plasmodium berghei parasites engineered to express P falciparum antigens. 'The immune protection lasted over four months post-booster dose, which translates to more than a decade of protection in humans. The vaccine was administered with safe alum-based adjuvants and showed no adverse reactions,' said Dr Pati. Senior scientist Dr Subhash Singh was also a key contributor to the development of the vaccine. High stability at low cost The uniqueness of AdFalciVax over existing vaccines is its pharmaceutical stability. The formulation remains potent for over nine months at room temperature, doing away with the need for expensive cold chain logistics, which continue to be a long-standing challenge in vaccine distribution, especially in remote and under-resourced regions. The vaccine is also highly cost-effective, with an estimated production cost of just `20 per dose. The current vaccines are priced between `250 and `830 per dose. The affordability of the newly developed vaccine could make mass immunisation programmes significantly more viable. ICMR has now invited expressions of interest from eligible firms and manufacturers for technology transfer and commercial-scale production. The vaccine is expected to go for clinical trial stages soon and potentially be rolled out for public use in the next few years. However, the efficacy during the clinical trials will be the key.
Indian Express
3 days ago
- Health
- Indian Express
ICMR invites partners to launch and sell its new malaria vaccine
The Indian Council of Medical Research (ICMR) has invited the country's vaccine manufacturers to partner with it to launch and sell a malaria vaccine that its Regional Medical Research Centre, Bhubaneshwar, has developed. Called AdFalciVax, it is a recombinant vaccine, meaning parts of the genes that encode for targets are inserted into a cell, the target proteins are expressed, and then used to trigger an immune response. Malaria is a parasitic infection transmitted by mosquitoes. While the current vaccine protects against the most common one that causes infection in humans called plasmodium falciparum, there are at least four other parasites from the same family known to cause infection in humans. P. vivax is the other one that commonly causes malaria infections, especially in India. The others — p malariae, p ovale, and p knowlesi — cause fewer infections. While the pre-clinical studies have already shown positive indications, the company that collaborates with the ICMR will be responsible for further development, human clinical trials, and scale-up for commercial production. The vaccine contains the genetic material of two targets — one for a major protein called CSP found on the surface of the malaria parasite and another for a combination of parts of two proteins that affect the pathogen's lifecycle. 'There are some key differences in the ICMR vaccine as compared to the other two currently in the market. One, this vaccine used the DNA for the whole CSP protein instead of just a few parts, meaning it is likely to produce a stronger immune response. Two, the other target that is used prevents the development of the p. falciparum in the mosquito's midgut during its lifecycle. What this essentially means is that it prevents the infection not only in the vaccinated person, but stops the further spread of the disease by disrupting the lifecycle of the pathogen even when it has already been picked up by a mosquito from an infected person for further transmission,' said Dr Subhash Singh, project manager for development of the vaccine. Senior scientist Dr Susheel Singh and director Dr Sanghamitra Pati were part of the development process. The pre-clinical validation was done in collaboration with ICMR-National Institute of Medical Research and the National Institute of Immunology. Anonna Dutt is a Principal Correspondent who writes primarily on health at the Indian Express. She reports on myriad topics ranging from the growing burden of non-communicable diseases such as diabetes and hypertension to the problems with pervasive infectious conditions. She reported on the government's management of the Covid-19 pandemic and closely followed the vaccination programme. Her stories have resulted in the city government investing in high-end tests for the poor and acknowledging errors in their official reports. Dutt also takes a keen interest in the country's space programme and has written on key missions like Chandrayaan 2 and 3, Aditya L1, and Gaganyaan. She was among the first batch of eleven media fellows with RBM Partnership to End Malaria. She was also selected to participate in the short-term programme on early childhood reporting at Columbia University's Dart Centre. Dutt has a Bachelor's Degree from the Symbiosis Institute of Media and Communication, Pune and a PG Diploma from the Asian College of Journalism, Chennai. She started her reporting career with the Hindustan Times. When not at work, she tries to appease the Duolingo owl with her French skills and sometimes takes to the dance floor. ... Read More
New Indian Express
6 days ago
- Health
- New Indian Express
RMRC Bhubaneswar develops advanced malaria vaccine, ready for tech transfer
BHUBANESWAR: In a significant breakthrough, a team of researchers led by the Regional Medical Research Centre (RMRC), Bhubaneswar, has developed a novel and advanced malaria vaccine that can prevent Plasmodium falciparum infection in humans and community transmission. The new recombinant, chimeric multi-stage vaccine code-named AdFalciVax has been designed to protect against the deadliest malaria parasite in humans. It is now ready for technology transfer to manufacturers for production, clinical trials and its commercialisation. Currently, two malaria vaccines are available and cost in a range of `250 to `830 per dose. The efficacy rate is between 33 per cent and 67 per cent. Unlike existing WHO-recommended vaccines RTS,S/AS01 (Mosquirix) and R21/Matrix-M, AdFalciVax offers dual-stage protection and is cost-effective. Scientist-D at RMRC Dr Susheel Singh said the new vaccine can prevent human infection and interrupt transmission in the community. 'AdFalciVax uses a full-length PfCSP, a major protein found in Pf, for broader protection and includes a novel fusion of Pfs230 and Pfs48/45 proteins to produce strong antibodies that stop the transmission,' he said. What makes AdFalciVax stand out among the existing vaccines is its exceptional pharmaceutical stability. The formulation remains potent for over nine months at room temperature, eliminating the need for costly cold chain logistics, which continue to be a major bottleneck in vaccine distribution across remote and resource-limited regions. According to the researchers, the vaccine has been developed with the help of cutting-edge protein engineering using Lactococcus lactis, a safe bacterial host. The pre-clinical validation of the technology has been conducted by RMRC in collaboration with National Institute of Malaria Research (NIMR) and National Institute of Immunology (NII), New Delhi. RMRC director Dr Sanghamitra Pati said, 'The vaccine's efficacy was sustained for over four months post-boost, which translates to over a decade of protection in humans.' Meanwhile, Indian Council of Medical Research (ICMR), New Delhi has invited expressions of interest from the eligible organisations, companies and manufacturers for transfer of technology and commercialisation.
