All articles tagged: Vaccination

Researchers at the Institut Pasteur in France have developed artificial "lymphoid organ-chips" that recreate much of the human immune system's response to booster vaccines. The technology, described in an article published September 6 in the Journal of Experimental Medicine, could potentially be used to evaluate the likely effectiveness of new protein and mRNA-based booster vaccines for COVID-19 a

When you got the SARS-CoV2 vaccine to protect against COVID-19, you may have experienced severe side effects. Or maybe you didn't.

As a summer surge of COVID-19 outbreaks is underway, new vaccines for the virus have been released.

At the peak of the COVID-19 pandemic in 2021, governments and health care centers across the country faced a difficult but important question: Should health care workers be required to obtain the COVID-19 vaccine?

Research led by University of Oxford researchers describes a first-of-its-kind method capable of distinguishing authentic and falsified vaccines by applying machine learning to mass spectral data. The method proved effective in differentiating between a range of authentic and 'faked' vaccines previously found to have entered supply chains.

Polio was eliminated from most parts of the world as part of a decadeslong effort by the World Health Organization and partners to wipe out the disease. But polio is one of the world's most infectious diseases and is still spreading in a small number of countries. The WHO and its partners want to eradicate polio in the next few years.

With the nation in the midst of a summer surge of COVID-19 infections and increased hospitalizations due to the disease, the Food and Drug Administration (FDA) last week approved updated COVID vaccines to protect Americans six months and older against the deadly virus. But Annenberg Public Policy Center (APPC) health survey data finds that the number of Americans believing COVID-19 vaccination mis

Researchers at Tulane University have discovered a new approach to tackling a lingering health challenge faced by some with long-term COVID: high blood sugar levels.

Certain types of gut bacteria can hinder the efficacy of the rotavirus vaccine, according to researchers in the Institute for Biomedical Sciences at Georgia State University.

In 2023, vaccination coverage for adolescents with all routine vaccines was similar to coverage in 2022, according to research published in the Aug. 22 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

The European Commission on Friday approved Moderna's respiratory syncytial virus (RSV) vaccine for older adults—the first time the bloc has authorised an mRNA shot against a disease other than COVID-19.

US health authorities on Thursday approved updated versions of Pfizer and Moderna's COVID-19 vaccines, with the companies saying the jabs will be available "in the coming days."

Updated COVID-19 vaccines may receive approval from the U.S. Food and Drug Administration this week.

During the COVID-19 pandemic, mRNA vaccines came to the rescue, developed in record time and saving lives worldwide. Researchers in the Precision Vaccines Program at Boston Children's Hospital have developed two novel technologies that could make these and future mRNA vaccines more potent and longer-lasting—at smaller doses and with fewer side effects.

As COVID-19 settles into a permanent presence in our lives, annual vaccinations are becoming the norm.

Updated shots you could use this fall to shield against COVID-19 infection may receive approval this week.

Germany's BioNTech and US pharma giant Pfizer said Friday they had suffered a setback in a late-stage trial of their combined mRNA vaccine against COVID-19 and influenza.

COVID-19 vaccination seems to have some side effects on the lower urinary tract and overactive bladder in younger adults, according to a study published online June 24 in Frontiers in Medicine.

Vaccines are safe and effective, and help reduce death and illness. But global vaccination rates are suboptimal and have trended downward, leaving humanity more vulnerable to vaccine-preventable diseases such as COVID-19, influenza, measles, polio, and HPV.

Vaccinations have provided significant protection for the public against infectious diseases. However, there was a modest decrease in support in 2023 nationwide for vaccine requirements for children to attend public schools.

Many vaccines are only partially effective, have waning efficacy, or do not work well in the very young or the very old. For more than a decade, Ofer Levy, MD, Ph.D., and David Dowling, Ph.D., in the Precision Vaccines Program at Boston Children's Hospital, have tried improving vaccines by adding compounds known as adjuvants to boost vaccine recipients' immune responses.

U.S. health officials announced Tuesday that the federal government will pay Moderna $176 million to speed development of a pandemic flu vaccine based on mRNA technology.

World leaders, health groups and pharmaceutical firms announced $1.2 billion in funding at a summit Thursday to produce vaccines in Africa, which is facing numerous health crises including rising cholera outbreaks.

During the COVID-19 pandemic, vaccine mandates were controversial, but they still successfully increased vaccination rates. A new study of South Texas residents by researchers at Rice University and University of Texas Health Science Center at San Antonio found that vaccinated Asian patients were significantly more likely than other ethnic/racial groups to support COVID-19 vaccine mandates.

A resurgence of cholera across Africa has driven an urgent need for more vaccine doses, but stock shortages have hampered the fight against the increasing outbreaks of the deadly disease.

In just a few months, hospitals and health systems nationwide will start working to vaccinate as many staff as possible against the flu. And a new study published in the journal JAMA Network Open suggests that more of those hospitals than ever before will require employees to get vaccinated, or seek an exemption.

Headache, chills, tiredness may be evidence of a supercharged defense, according to UCSF-led study.

The U.S. Food and Drug Administration on Friday has for the first time approved the use of a respiratory syncytial virus (RSV) vaccine for people in their 50s who are at increased risk for the illness.

The global COVID-19 vaccine rollout continues to face challenges due to inequity and vaccine hesitancy.

A new study has found vaccination and prompt lockdown to be the most effective strategies to minimize COVID-19 spread in prisons. However, a combination of other measures is needed to contain the spread of the disease in confined settings.

When public health officials make policies about when and how vaccination programs are implemented, they must weigh the benefits and risks of how infectious diseases spread throughout the country. However, these analyses are often based on national-level data and, in some countries, may overlook nuances at the local level.

Germany has scrapped a requirement for its military servicepeople to be vaccinated against COVID-19, a mandate that had been in place since late 2021, the government said Wednesday.

Measles is on the rise in the United States. In the first quarter of this year, the number of cases was about 17 times what it was, on average, during the same period in each of the four years before, according to the Centers for Disease Control and Prevention. Half of the people infected— mainly children—have been hospitalized.

The American Heart Association warns that false information about COVID vaccination and heart defects attributed to the Association may be spreading. The misinformation is inaccurately and incorrectly connected to a recent scientific paper on cardiovascular-kidney-metabolic (CKM) syndrome.

Anti-malaria drugs have been a central component of a global public health effort that saw a 44% drop in the deadly mosquito-borne disease from 2000 to 2019, but progress has stalled as the parasites that cause malaria gain resistance to these drugs.

French pharmaceutical giant Sanofi and struggling US rival Novavax announced Friday an alliance to sell a COVID vaccine and develop another that combines with a flu shot.

An international team of health and medical researchers including workers at the WHO, working with economists and modeling specialists, has found that the use of vaccines to prevent or treat disease has saved the lives of approximately 154 million people over the past half-century.

Anglo-Swedish drugmaker AstraZeneca on Wednesday said it was withdrawing COVID vaccine Vaxzevria, one of the first produced in the deadly pandemic, citing "commercial reasons" following a slump in demand.

Each one of us has around 600 lymph nodes (LNs)—small, bean-shaped organs that house various types of blood cells and filter lymph fluid—scattered throughout our bodies. Many of us have also experienced some of our LNs to temporarily swelling during infections with viruses or other pathogens.

For undocumented Latinx patients who sought care in the emergency room during the pandemic, the reported rate of having received the COVID-19 vaccine was found to be the same as U.S. citizens, a new UCLA Health study found.

Three more African countries have joined a rollout of malaria vaccines targeting millions of children in a continent that accounts for 95 percent of malaria deaths, the UN said Thursday.

Some of the 10 women and teenage girls who recently came to a medical clinic in eastern Venezuela for free contraceptives fidgeted a bit when a community health worker taught them how to use an IUD, condoms and birth control pills correctly.

Metabolic health (normal blood pressure, blood sugar and cholesterol levels, among other factors) influences the effectiveness of influenza vaccinations. Vaccination is known to be less effective in people with obesity compared to those with a healthier body mass index (BMI), but St. Jude Children's Research Hospital scientists have found it is not obesity itself, but instead metabolic dysfunction

Researchers from NDORMS and the University of Oslo have successfully replicated findings from recently published international studies on the effectiveness of COVID-19 vaccines to prevent long COVID and post-acute complications.

New research examining the characteristics of physicians with the largest share of patients unvaccinated against SARS-CoV-2 may help increase vaccination rates going forward. The study, published in CMAJ (Canadian Medical Association Journal), found that family physicians in Ontario with the largest percentage of unvaccinated patients generally served patients living in marginalized neighborhoods

An analysis of data from a nationwide health survey reveals "concerning" disparities in human papillomavirus (HPV) vaccine uptake among US adults aged 27 to 45 years.

Annual administration of a second dose of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine five months after the initial dose results in fewer hospitalizations and deaths, according to a study published in the Annals of Internal Medicine.

H. pylori is one of the most common disease-causing bacteria. More than half of the world's population have the bacteria in their body; and while in Canada overall prevalence of H. pylori is between 20% and 30%, some groups—including Indigenous communities—have higher rates.

Findings of a new study led by researchers at Northwestern University and the University of Cincinnati could help public health officials lead more effective vaccination campaigns that overcome hesitancy.

Calder Biosciences, Inc., a next-generation vaccine company, has published an article that debuts and validates the application of Calder's '3D Vaxlock' platform technology. When applied to the Respiratory Syncytial Virus (RSV) F protein as a vaccine immunogen, Calder's 3D Vaxlock technology achieves an unprecedented 11X more potent immune response than the standard industry comparator.

A newly developed intranasal vaccine candidate helps to clear COVID-19 infections more quickly than controls in pre-clinical testing, according to a recent study. The new vaccine platform relies on a protein scaffold that resembles a tiny wire-frame soccer ball, roughly the size and shape of a virus. When the surface of the scaffold is decorated with a portion of the spike protein from the SARS-Co

If someone is vaccinated against the measles virus, they likely won't get measles.

A new treatment for infant respiratory syncytial virus (RSV)—a leading cause of severe illness in US babies—is 90 percent effective in preventing hospitalization, health authorities said Thursday.

Patients kept asking a question that Nathan Lo, MD, Ph.D., infectious disease specialist, had a hard time answering: How often should I get my booster shot for COVID-19?

The 2023 to 2024 seasonal influenza vaccine is effective for reducing the risk for medically attended influenza virus infection, according to research published in the Feb. 29 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

In an effort to prevent a shortage, the U.S. Centers for Disease Control and Prevention is advising doctors to conserve the tetanus vaccine because one manufacturer is stopping production.

U.S. flu vaccines are likely to move from quadrivalent to trivalent due to a change in circulating influenza viruses, says a University of Michigan researcher. Currently, all influenza vaccines in the United States are quadrivalent, meaning that they protect against four different flu viruses.

Effective population level vaccination campaigns are fundamental to public health. Countercampaigns, which are as old as the first vaccines, can disrupt uptake and threaten public health globally.

Delivering childhood vaccines via drone could be a triple whammy—saving lives, saving money and improving health outcomes—according to research in Transportation Science. The authors developed optimization models to strategically design a distribution network for drones to deliver vaccines. Their proposed approach was evaluated using real-world data from the Vanuatu region, where vaccine delivery

During the height of the COVID-19 pandemic, policy was being made in crisis management mode. Decisions had to be made faster than usual, and there was limited ability to undertake wider consultation and impact analysis.

The Vaccine Adverse Event Reporting System (VAERS) is an open, national surveillance system used by medical professionals as well as the public at large to self-report potential adverse medical events following vaccination. These events are entered as unconfirmed reports to VAERS, which is managed by the Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC). A

The prospect of the worrisome triple threat of COVID, RSV, and flu was assuaged last year by the effectiveness of flu vaccines. Two recent studies from the Centers for Disease Control and Prevention's VISION Network have found that flu vaccines were effective for all ages against both moderate and severe flu in the U.S. during the 2022-2023 flu season.

The U.S. Centers for Disease Control and Prevention is weighing whether to recommend another COVID booster shot this spring, most likely for those who are vulnerable to severe illness.

More than two dozen toddlers and at least 128 pregnant women received RSV vaccines they should not have gotten, U.S. health officials say.

Visible gaps between rural and urban COVID-19 vaccination rates highlight the need for tailored health responses, University of Otago researchers argue.

Updated monovalent COVID-19 vaccines offer vaccine effectiveness (VE) of 54 percent against symptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, according to research published in the Feb. 1 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

"Trust me, I'm a doctor." While this expression has become an advertising slogan and meme, physicians and nurses continually rank among the most trusted professions in the U.S.

First boosters, second boosters, monovalent, bivalent. Just like the SARS-CoV-2 virus strain, the vaccines to combat the virus are always changing—and perhaps confusing.

Winter is here, inflicting its usual array of symptoms—coughs, nasal congestion, fatigue and fever—and, this year, a new COVID-19 variant is dominating the scoreboard.

Dr. Sophie Martucci is an expert in Public Health from the School of Life Sciences at the University of Warwick. As part of her agents of infectious disease module and science communication model, she covers the MMR Vaccine and the unnecessary controversy around the vaccination.

The first research study of the entire UK population highlights gaps in COVID-19 vaccine coverage. Between a third and a half of the populations of the four UK nations had not had the recommended number of COVID vaccinations and boosters by summer 2022.

Openly gay, bisexual and other sexual minority men were more likely than those who conceal their sexual orientation to seek care for mpox last year during a global outbreak of the disease that disproportionately affected their community, researchers from Cornell and the University of Toronto found.

The flu season in the U.S. is getting worse but it's too soon to tell how much holiday gatherings contributed to a likely spike in illnesses.

Researchers from Karolinska Institutet in Sweden have discovered that the gut microbiome can influence how well people respond to mRNA COVID vaccines. The study, published in the journal npj Biofilms and Microbiomes, suggests that certain bacteria in the gut can enhance the immune response to the vaccine, whereas other bacteria may weaken it.

More U.S. hospitals are requiring masks and limiting visitors as health officials face an expected but still nasty post-holiday spike in flu, COVID-19 and other illnesses.

Look for flu and COVID-19 infections to ramp up in the coming weeks, U.S. health officials say, with increases fueled by holiday gatherings, too many unvaccinated people and a new version of the coronavirus that may be spreading more easily.

Vaccine development aims at protecting as many people as possible from infections. Short protein fragments of pathogens, so-called epitopes, are seen as a promising new approach for vaccine development.

German manufacturer BioNTech on Monday said it had completed a key step in setting up its first vaccine production hub in Africa aiming to boost access to mRNA jabs on the continent.

The risk of death from COVID-19 decreases significantly after vaccination but this protection diminishes after six months, providing evidence for continued booster doses, a new study has found.

Most voters (57%) in 22 states in the American Heartland say they won't get the new COVID-19 vaccine this year. This finding from 12 traditional Midwestern states and 10 surrounding ones was significantly higher than the national average of 51%, in state and national surveys conducted this fall by Emerson College Polling.

An estimated quarter of adults and two-thirds of children have strong fears around needles, according to the U.S. Centers for Disease Control and Prevention. Yet, public health depends on people being willing to receive vaccines, which are often administered by a jab.

Four out of five people in Mexico who got influenza shots so far this year turned down the government's recommendation that they get Russian or Cuban COVID-19 boosters at the same time, officials said Tuesday.

Erin Kissane, a co-founder of the COVID Tracking Project, rolled up her sleeve for the Novavax COVID-19 vaccine in mid-October soon after it was finally recommended in the United States. Like many people with autoimmune diseases, she wants to protect herself from a potentially devastating COVID infection.

A study by researchers at the Brown University School of Public Health on ways to mitigate the impacts of misleading COVID-19 information found that variations in the designs of prior studies have complicated efforts at drawing strong conclusions about what worked and what did not.

Since 2000, measles vaccination has averted an estimated 57 million deaths worldwide, but vaccination coverage decreased during the COVID-19 pandemic and has not returned to prepandemic levels, according to research published in the Nov. 17 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

A rule added to Texas' budget that went into effect Sept. 1 forbids health departments and other organizations funded by the state government to advertise, recommend, or even list COVID vaccines alone. "Clinics may inform patients that COVID-19 vaccinations are available," the rule allows, "if it is not being singled out from other vaccines."

The best way to prevent cervical cancer in women is to give HPV vaccines to both boys and girls, a new study argues.

US health authorities on Thursday approved the world's first vaccine for chikungunya, a virus spread by infected mosquitoes that the Food and Drug Administration called "an emerging global health threat."

A US reporting system designed to detect potential safety issues with vaccines is supposed to be user-friendly, responsive, and transparent. But an investigation published by The BMJ today finds it's not meeting its own standards.

The effectiveness of the live zoster (shingles) vaccine is highest in the first year after vaccination and then wanes substantially. But it continues to provide some protection against shingles and its complications ten years after vaccination, even in patients with a weakened immune system, finds a study published by The BMJ.

When the first vaccines for COVID-19 rolled out in December 2020, some people hoped they would be a silver bullet against the novel virus the way that polio and smallpox shots are nearly 100% effective against those diseases.

mRNA-based vaccines and gene/cell therapeutics open up new possibilities for medical practitioners in the fight against cancer and infectious or hereditary diseases. However, manufacturing these innovative pharmaceuticals is an expensive and time-consuming process.

Americans have less confidence in vaccines to address a variety of illnesses than they did just a year or two ago, and more people accept misinformation about vaccines and COVID-19, according to the latest health survey from the Annenberg Public Policy Center (APPC) of the University of Pennsylvania.

Worldwide, there was an increase in immunization during 2022, but coverage was lower than in 2019, according to research published in the Oct. 27 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

A month after federal officials recommended new versions of COVID-19 vaccines, 7% of U.S. adults and 2% of children have gotten a shot.

The recent award of the 2023 Nobel prize in physiology or medicine to Katalin Karikó and Drew Weissman highlights the growing importance of RNA technology in the medical world, with many potential applications beyond COVID vaccines.

Nearly two-thirds of those with hepatitis A virus (HAV)-related deaths have at least one documented indication for HAV vaccine, and only 4% have evidence of vaccination, according to research published in the Oct. 20 issue of Morbidity and Mortality Weekly Report.

An international consortium of multidisciplinary researchers and specialists has developed a new method to counter the problem of COVID-19 vaccine falsification.

Between January 1, 2023, and May 22, 2023, legislators in 43 states and the District of Columbia introduced 196 bills addressing school entry vaccination requirements, non-medical exemptions, and scope of practice for providers to administer vaccines.

Maternal vaccination with a bivalent stabilized prefusion F subunit respiratory syncytial virus (RSV) vaccine (RSVpreF) is projected to reduce the clinical and economic burden of RSV lower respiratory tract illness (LRTI) in infants, according to a study presented at the annual meeting of the Infectious Diseases Society of America (IDWeek), held from Oct. 11 to 15 in Boston.

Following a rocky roll-out, more than 7 million Americans have now gotten the newly updated COVID vaccines.

Fifty-five percent of U.S. adults reported that they would "definitely" or "probably" get a recommended influenza vaccination in the coming months, while 46% plan to receive an updated COVID-19 vaccine, according to findings from a national survey of 1,280 adults commissioned by the Center for Health and Risk Communication (CHRC) in the Grady College of Journalism and Mass Communication at the Uni

It's the end of an era for a once-critical pandemic document: The ubiquitous white COVID-19 vaccination cards are being phased out.

Federal regulators on Tuesday gave the go-ahead to an updated Novavax COVID vaccine, giving Americans a more traditional alternative to two recently revamped mRNA vaccines.

In September 2022, new bivalent COVID-19 boosters became available in the United States, but less than 20% of the eligible population ultimately received one. A new study led by researchers in the University of Arizona Mel and Enid Zuckerman College of Public Health identified why so many Americans did not receive a booster.

HPV, or human papillomavirus, is the most common sexually transmitted infection. It is also the leading cause of cervical cancer. Over 1,400 Canadian women are affected yearly, with almost 400 deaths, according to the Canadian Cancer Society. It is completely preventable with the HPV vaccine, and yet, unfortunately, many people are unvaccinated.

Among patients with chronic kidney disease (CKD), younger adults, Black individuals, and those with adverse social determinants of health are less likely to receive a flu vaccine, according to a study published online Sept. 15 in the American Journal of Kidney Diseases.

The risk for solicited reactions following influenza vaccine is higher for women than men, according to research published online Sept. 28 in the Journal of Epidemiology & Community Health.

Just 23% of American adults say they 'definitely' will get the new COVID-19 vaccine, while another 23% say they will 'probably' get it, according to a new poll, which also finds interest in the shot falls along partisan lines.

Studies of a "future-proof" vaccine candidate have shown that just one antigen can be modified to provide a broadly protective immune response in animals. The studies suggest that a single vaccine with combinations of these antigens—a substance that causes the immune system to produce antibodies against it—could protect against an even greater range of current and future coronaviruses.

On Friday 22 September, researchers from the University of Hertfordshire and charity Beyond Words will launch a new resource that helps people with learning disabilities to understand the importance of vaccines, and take informed decisions about their health.

Whether vaccinated or not, having at least four disease risk factors put adults hospitalized due to COVID-19 at higher risk for critical outcomes, according to a 10-state study from the Centers for Disease Control and Prevention's (CDC's) VISION Network. The study describes the characteristics of adults hospitalized with COVID-19 from June 2021 through March 2023 and enumerates their risk factors

The U.S. CDC (Centers for Disease Control and Prevention) Global COVID Vaccine Safety Project has generated background incidence rates on a range of conditions designated as AESI (Adverse Events of Special Interest) for COVID-19 vaccine safety monitoring. Conditions studied included myocarditis, pulmonary embolism, and Guillain-Barré syndrome.

A social media campaign launched in 2022 helped encourage some Nigerians to roll up their sleeves for a COVID vaccine, according to a new study published Sept. 15. The paper, "Outcomes of a social media campaign to promote COVID-19 vaccination in Nigeria," was published Sept. 15 in the journal PLOS ONE.

We've just entered flu season, which typically runs from September to March, and doctors recommend getting vaccinated within this time frame to protect against severe cases of the illness.

Ahead of the fall respiratory virus season, the Food and Drug Administration has approved two updated COVID-19 vaccines. The new messenger RNA, or mRNA, vaccines from Moderna and Pfizer/BioNTech are formulated to better target variants that are currently circulating and will replace outdated vaccines.

The U.S. has approved updated COVID-19 vaccines. How does this affect you? Should you get this new vaccine? Might it protect against long COVID?

Influenza vaccination reduced the risk for influenza-associated hospitalizations by 52 percent in the March to September Southern Hemisphere 2023 influenza season, according to research published in the Sept. 8 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

In a finding that should ease the minds of Americans ahead of another flu season, this year's vaccines have already cut the risk of hospitalization in half during the South American winter, health officials report.

Two-thirds of health care providers agree or strongly agree with expanding recommendations for the new 20-valent pneumococcal conjugate vaccine (PCV20), according to research published in the Sept. 8 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.

Updated COVID-19 vaccines are coming soon, just in time to pair them with flu shots. And this fall, the first vaccines for another scary virus called RSV are rolling out to older adults and pregnant women.

This summer, viral misinformation claimed that the Amish did not vaccinate against COVID-19 and, as a result, had a death rate 90 times lower than the rest of the United States. Now, a Penn State study is the first to provide geographically broad and population-wide evidence that while the Amish-populated counties across the nation tend to have lower vaccination rates than other populations, they

New research from The Ohio State University College of Medicine finds COVID-19 vaccine mandates are highly effective at reducing the spread of the virus and increasing immunity in a university setting.

ChatGPT could help to increase vaccine uptake by debunking myths around jab safety, say the authors of a study published in the journal Human Vaccines & Immunotherapeutics.

A UN anti-racism committee on Thursday urged rich countries—particularly Britain, Germany, Switzerland and the United States—to waive coronavirus vaccine patents and said they violated a guarantee against racial discrimination.

The EU's drug watchdog on Wednesday approved an updated version of Pfizer and BioNTech's anti-Covid jab to counter an infectious subvariant of the virus as winter approaches.

A global COVID-19 knowledge-sharing platform has secured three new licensing agreements to transfer vaccine technologies, including one with the first private manufacturer to join the initiative, the World Health Organization said Tuesday.