Health
First New HIV Vaccine Efficacy Study Begins

By Dipo Olowookere
The first HIV vaccine efficacy study to launch anywhere in seven years is now testing whether an experimental vaccine regimen safely prevents HIV infection among South African adults.
The study, called HVTN 702, involves a new version of the only HIV vaccine candidate ever shown to provide some protection against the virus.
HVTN 702 aims to enrol 5,400 men and women, making it the largest and most advanced HIV vaccine clinical trial to take place in South Africa, where more than 1,000 people become infected with HIV every day.
“If deployed alongside our current armoury of proven HIV prevention tools, a safe and effective vaccine could be the final nail in the coffin for HIV,” said Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health and a co-founder of the trial.
“Even a moderately effective vaccine would significantly decrease the burden of HIV disease over time in countries and populations with high rates of HIV infection, such as South Africa.”
The experimental vaccine regimen being tested in HVTN 702 is based on the one investigated in the RV144 clinical trial in Thailand led by the US Military HIV Research Program and the Thai Ministry of Health.
The Thai trial delivered landmark results in 2009 when it found for the first time that a vaccine could prevent HIV infection, albeit modestly.
The new regimen aims to provide greater and more sustained protection than the RV144 regimen and has been adapted to the HIV subtype that predominates in southern Africa, a region that includes the country of South Africa.
“The people of South Africa are making history by conducting and participating in the first HIV vaccine efficacy study to build on the results of the Thai trial,” said HVTN 702 Protocol Chair Glenda Gray, M.B.B.C.H., F.C.Paed. (SA). “HIV has taken a devastating toll in South Africa, but now we begin a scientific exploration that could hold great promise for our country. If an HIV vaccine were found to work in South Africa, it could dramatically alter the course of the pandemic.” Dr Gray is president and chief executive officer of the South African Medical Research Council; research professor of paediatrics at the University of the Witwatersrand, Johannesburg; and a founding director of the Perinatal HIV Research Unit at Chris Hani Baragwanath Hospital in Soweto, South Africa.
Co-chairing the protocol with Dr. Gray are Linda-Gail Bekker, M.D., Ph.D.; Fatima Laher, M.D.; and Mookho Malahleha, M.B.Ch.B., M.P.H. Dr. Bekker is deputy director of the Desmond Tutu HIV Centre at the University of Cape Town and chief operating officer of the Desmond Tutu HIV Foundation in Cape Town, South Africa. Dr. Laher is a director of the Perinatal HIV Research Unit at Chris Hani Baragwanath Hospital. Dr. Malahleha is deputy director of Setshaba Research Centre in Soshanguve, South Africa.
The experimental vaccine regimen tested in the Thai trial was found to be 31.2 percent effective at preventing HIV infection over the 3.5-year follow-up after vaccination. In the HVTN 702 study, the design, schedule and components of the RV144 vaccine regimen have been modified in an attempt to increase the magnitude and duration of vaccine-elicited protective immune responses.
As the regulatory sponsor of HVTN 702, NIAID is responsible for all operational aspects of this pivotal Phase 2b/3 trial, which is enrolling HIV-uninfected, sexually active men and women aged 18 to 35 years. The NIAID-funded HIV Vaccine Trials Network (HVTN) is conducting the trial at 15 sites across South Africa. Results are expected in late 2020.
HVTN 702 begins just months after interim results were reported for HVTN 100, its predecessor clinical trial, which found that the new vaccine regimen was safe for the 252 study participants and induced comparable immune responses to those reported in RV144.
HVTN 100 and HVTN 702 are part of a larger HIV vaccine research endeavour led by the Pox-Protein Public-Private Partnership, or P5—a diverse group of public and private organizations committed to building on the success of the RV144 trial. The P5 aims to produce an HIV vaccine that could have a significant public health benefit in southern Africa and to advance scientists’ understanding of the immune responses associated with preventing HIV infection. P5 members include NIAID, the Bill & Melinda Gates Foundation, the South African Medical Research Council, HVTN, Sanofi Pasteur, GSK and the U.S. Military HIV Research Program.
The HVTN 702 vaccine regimen consists of two experimental vaccines: a canarypox vector-based vaccine called ALVAC-HIV and a two-component gp120 protein subunit vaccine with an adjuvant to enhance the body’s immune response to the vaccine. The vaccines do not contain HIV and therefore do not pose any danger of HIV infection to study participants. Both ALVAC-HIV (supplied by Sanofi Pasteur) and the protein vaccine (supplied by GSK) have been modified from the versions used in RV144 to be specific to HIV subtype C, the predominant HIV subtype in southern Africa. Additionally, the protein subunit vaccine in HVTN 702 is combined with MF59 (also supplied by GSK), a different adjuvant than the one used in RV144, in the hope of generating a more robust immune response. Finally, the HVTN 702 vaccine regimen includes booster shots at the one-year mark in an effort to prolong the early protective effect observed in RV144.
The study volunteers are being randomly assigned to receive either the investigational vaccine regimen or a placebo. All study participants will receive a total of five injections over one year.
The safety of HVTN 702 study participants will be closely monitored throughout the trial, and participants will be offered the standard of care for preventing HIV infection. Study participants who become infected with HIV in the community will be referred to local medical providers for care and treatment and will be counselled on how to reduce their risk of transmitting the virus.
HVTN 702 is one of many NIAID-supported HIV prevention trials in progress in southern Africa. These include the AMP Studies, which are testing infusions of the VRC01 antibody; the open-label HOPE study, which is examining a dapivirine vaginal ring; and HPTN 076 and 077, which are studying long-acting injectable rilpivirine and cabotegravir, respectively.
Health
Resident Doctors Suspend Proposed Indefinite Strike
By Adedapo Adesanya
The Nigerian Association of Resident Doctors (NARD) has suspended its planned indefinite strike following the federal government’s reversal of the implementation of the reviewed Professional Allowance Table (PAT) and renewed assurances on outstanding payments.
The decision was announced in a communiqué issued at the end of an emergency National Executive Council (NEC) meeting held virtually on Saturday.
NARD had earlier resolved to embark on a total and indefinite strike over the government’s suspension of the reviewed allowance structure and other unresolved welfare concerns affecting resident doctors nationwide.
However, the association said it reconsidered its position after reviewing the outcomes of high-level engagements with key government officials and health-sector stakeholders.
According to the communiqué signed by NARD President, Dr Mohammad Usman Suleiman; Secretary-General, Dr Shuaibu Ibrahim; and Publicity and Social Secretary, Dr Abdulmajid Yahya Ibrahim, the Federal Government has now reversed its earlier decision on the allowance table.
“The NEC observed that the earlier decision to halt the implementation of the reviewed Professional Allowance Table (PAT) has been reversed, with implementation expected to reflect in the April salary and beyond,” the statement read.
The association also noted the government’s renewed commitment to settling outstanding promotion and salary arrears owed to resident doctors in affected institutions.
In addition, NARD said initial approval had been secured for the 2026 Medical Residency Training Fund (MRTF), with assurances that the disbursement process would be concluded.
“The NEC observed that the Budget Office has indicated its readiness to commence the process for the payment of the outstanding nineteen months’ arrears of the Professional Allowance,” the communiqué added.
Despite the progress, the doctors expressed concern about the continued delay in paying house officers’ salaries and called for urgent action to address the issue.
Following its deliberations, the NEC demanded the sustained implementation of the reviewed allowance structure, the prompt payment of all outstanding arrears, and the expedited disbursement of the residency training fund.
It also called for the immediate commencement of the process to clear the 19-month arrears and the convening of an urgent stakeholders’ meeting to resolve delays affecting house officers’ salaries.
“In light of the above developments, the NEC resolves to suspend the proposed total, indefinite, and comprehensive strike action, with a review of progress to be undertaken at the May Ordinary General Meeting (OGM) in Kano,” the statement said.
NARD expressed appreciation to President Bola Tinubu, Vice President Kashim Shettima, and several ministers, government agencies, and stakeholders for their interventions in resolving the dispute.
Health
Over 1.5 million Nigerian Children Living With Sickle Cell Disease—Report
By Modupe Gbadeyanka
More than 1.5 million children under the age of 15 are living with sickle cell disease in Nigeria, a new international study published in The Lancet Child & Adolescent Health, one of the world’s leading medical journals, has revealed.
In the report made available to Business Post, it was disclosed that Nigeria carries the highest burden of disease globally, far exceeding other high-burden countries such as the Democratic Republic of the Congo and Ethiopia.
The findings highlight both the scale of the challenge in Nigeria and the opportunity for the country to lead Africa in tackling one of the most preventable causes of childhood illness and death.
The study shows that nearly nine million children across sub-Saharan Africa are living with sickle cell disease in 2023, including around 1.17 million infants and 2.75 million children under five, who face the highest risk of early death without treatment.
Sickle cell disease is an inherited blood disorder present at birth. With early diagnosis and access to simple, low-cost interventions such as newborn screening, penicillin prophylaxis, routine vaccinations, malaria prevention, and hydroxyurea, most complications and deaths can be prevented.
However, in Nigeria, access to these essential services remains limited. Many children are only diagnosed after severe and avoidable complications, while others are never diagnosed at all, contributing to high levels of preventable illness and early childhood deaths.
The researchers emphasise that strengthening Nigeria’s health system response will be critical. This includes expanding newborn screening programmes, improving access to essential medicines, and integrating sickle cell care into primary healthcare services.
They called for urgent and coordinated action across government, health institutions, and development partners, including expanding newborn screening programmes, improving access to essential medicines and vaccines, and embedding sickle cell care within primary healthcare services.
The researchers, led by Professor Davies Adeloye, Professor of Public Health at Teesside University, United Kingdom, and Director of the International Society of Global Health (ISoGH), also called for increased domestic investment, supported by international partnerships, as well as stronger data systems to improve surveillance and guide policy decisions.
They concluded that even modest improvements in early-life screening and treatment in high-burden countries like Nigeria could transform child survival and significantly reduce preventable deaths.
“Nigeria now stands at the centre of the global sickle cell crisis. With over 1.5 million children affected, the scale is enormous, but so is the opportunity to act. We already know what works. Newborn screening and early treatment are effective, affordable, and can be delivered through existing health systems.
“If Nigeria prioritises sickle cell disease within its national health agenda and integrates care into routine maternal and child health services, we could save hundreds of thousands of young lives and significantly reduce avoidable deaths.” Professor Adeloye noted.
It was learned that the study analysed data from 40 studies across 22 African countries to produce the most comprehensive country-level estimates of childhood sickle cell disease to date.
Health
Helical Secures $10m Funding Package for Expansion
By Dipo Olowookere
A $10 million capital has been raised by Helical to support expansion across more top-20 pharma programmes and growth of its deployed science engineering team.
The firm will also use the money to build the compounding evidence layer that improves performance across diseases, as its mission is to make every scientist able to test hypotheses at the speed of inference and to turn in-silico discovery into a reliable engine for R&D throughput.
The funding package was from redalpine, Gradient, BoxGroup, Frst and notable angels, including Aidan Gomez (CEO Cohere), Clement Delangue (CEO HuggingFace) and Mario Goetze (pro soccer player).
Helical has a product known as the virtual AI lab for pharma, an application layer that turns biological foundation models into decision-ready, reproducible in-silico discovery workflows.
The platform has two product surfaces — the Virtual Lab for biologists and translational scientists, and the Model Factory for ML engineers and data scientists — built on the same data, the same models, and the same results.
By putting both sides in the same system, Helical closes the gap between computational predictions and biological decision-making, so teams that traditionally worked in silos can collaborate on the same evidence.
Helical was founded in early 2024. It was created by three school friends who took different paths to the same problem.
Rick Schneider built tech at Amazon and later helped the German enterprise Celonis scale in France and Japan. Maxime Allard led data science teams at IBM before pursuing a PhD focused on reinforcement learning and robotics. Mathieu Klop became a cardiologist and genomics researcher.
When bio foundation models emerged, the trio saw the chance to build the missing application layer that would let pharma teams move from model experimentation to reproducible, production discovery.
“The models alone don’t discover drugs. The system does. Pharma teams need a system that turns foundation models into workflows scientists can run, validate, and defend.
“We built Helical to make in-silico science reproducible at pharma scale, so teams can go from hypothesis to decision in days instead of months,” the co-founder of Helical, Mr Rick Schneider, said.
“We are at a unique point in time where biological foundation models and general language reasoning models are converging.
“We backed Helical because we strongly believe they have what it takes to build the pharma AI orchestration platform that will drive this transition from siloed AI models to integrated virtual AI labs,” the General Partner at redalpine, Mr Daniel Graf, stated.
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