Vaccine

A vaccine is a biological preparation that improves immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism, and is often made from weakened or killed forms of the microbe. The agent stimulates the body's immune system to recognize the agent as foreign, destroy it, and "remember" it, so that the immune system can more easily recognize and destroy any of these microorganisms that it later encounters.

Aluminum in Vaccines: Mechanisms, Myths, and Safety Data

This article explains how aluminum adjuvants work in vaccines, their proven safety record, and addresses common myths and scientific findings. It also highlights new developments in vaccine adjuvant technology and the ongoing need for rigorous monitoring.

How are Vaccines Stored?

Vaccine Excipients

What is a DNA Vaccine?

What the Newest mRNA Vaccines Could Do Beyond COVID

Role of Computer Modeling in Vaccine Development

Insight into Personalized Vaccines

Could there be a Salmonella Vaccine?

What is a Toxoid Vaccine?

The Essential Program on Immunization is 50: Milestones, achievements, and future directions

A New Breed of Vaccine: Exploring Doggybone ™ DNA Technology

What is a Live-Attenuated Vaccine?

See more featured articles »

What is the Importance of Vaccination Coverage?

Plant-Derived Vaccines

What is a VLP Vaccine?

Vaccine Schedule

What are the Different Types of Vaccines?

What are Vaccines?

What is a Subunit Vaccine?

What is Immunobridging?

How Veterinary Vaccines Affect Human Health

Vaccine Delivery

The Future of Vaccines

What is an Inactivated Vaccine?

What is a Non-Replicating Vaccine?

What are Adenovirus-Based Vaccines?

Vaccine History

Vaccine Production

The Big Catch-Up: How the COVID-19 pandemic impacted vaccination coverage

Vaccine Effectiveness

Vaccine Immunity

What are Nanoparticle-Based Vaccines?

Transforming Vaccine Design: The Promise of Systems Biology

What are the Main Causes of Vaccine Hesitancy?

Vaccination in Humanitarian Settings

Hib Immunization

Immunization strategies: What lessons can we learn from successful campaigns?

History of Vaccination

What is an RNA Vaccine?

What is a Vaccine Breakthrough?

Investigating the Importance of Investing in Vaccine Manufacturing

Latest Vaccine News and Research

Lung tumors hijack nervous system to drive cancer-related cachexia

According to the Cleveland Clinic, a quarter of cancer deaths can be attributed to one source: cachexia. Cachexia is a syndrome that accompanies underlying chronic illness and causes unwanted muscle and fat loss, reducing quality of life and sometimes even limiting treatment options.

2 Jul 2026

KFF poll finds vaccine myths reach many Americans but convince few

KFF’s 2026 tracking poll found that many U.S. adults have heard common vaccine myths, including false claims about MMR, COVID-19, mRNA vaccines, and measles vaccines. Fewer adults strongly believe these myths, but a large, uncertain “malleable middle” remains, especially among those without a trusted health care provider, frequent social media users, some AI health-information users, and parents who delayed or skipped childhood vaccines.

1 Jul 2026

COVID-19 vaccine boosters may protect against future animal coronavirus outbreaks

COVID-19 vaccine boosters not only protect against SARS‑CoV‑2 – the virus behind the most recent pandemic – but may also help protect against some future coronaviruses that risk spreading from animals to humans, Cambridge researchers have shown.

1 Jul 2026

New HIV vaccine shows unprecedented success in primate studies

A groundbreaking new HIV vaccine has shown unprecedented success in primates-and data published in Nature suggest the vaccine has the potential to protect humans from developing HIV infection and AIDS.

30 Jun 2026

Review highlights strong safety and effectiveness of mRNA vaccines

A comprehensive new review published in The Lancet affirms that currently approved mRNA vaccines are safe and highly effective at preventing infectious diseases, including COVID-19.

30 Jun 2026

New structural insights overturn old assumptions about malaria entry

For nearly half a century, scientists have known that malaria parasites force their way into human red blood cells through a ring-shaped structure called the moving junction.

30 Jun 2026

UTSA researchers develop bait pellets to combat Lyme disease

A breakthrough in the fight against Lyme disease is moving from the laboratory to the hardware store.

30 Jun 2026

High HPV vaccine uptake cuts cervical cancer deaths in women

A national HPV vaccination program in England is associated with a dramatic decline in cervical cancer deaths, reinforcing the vaccine's life-saving potential.

30 Jun 2026

COVID-19 vaccine boosters may help protect against future animal coronaviruses

30 Jun 2026

New schistosomiasis vaccine induces robust immune memory responses

For a vaccine to be effective, it must do two things. First, it must trigger an immune response. Second, the vaccine must train the body to remember the response so it can fight that same disease in the future.

29 Jun 2026

Single DNA injection provides long-lasting weight loss in mouse study

Scientists at The Wistar Institute have shown that a single injection of a small, circular piece of genetic instructions can produce weight loss and blood glucose control in murine models that lasts up to 10 times as long as incretin-mimicking drugs like Ozempic and Wegovy.

26 Jun 2026

Yale study offers critical clues for future norovirus treatments

As the leading cause of viral gastroenteritis worldwide, norovirus is an all too familiar ailment. Its telltale digestive upset — not to mention its reputation for being notoriously contagious — has earned it the nicknames "winter vomiting bug" and "stomach flu."

26 Jun 2026

Engineered CAR T cells successfully target bladder cancer in mice

Researchers at Weill Cornell Medicine, Cedars-Sinai Medical Center, and Roswell Park Comprehensive Cancer Center have developed genetically engineered CAR T cells that specifically target and kill bladder cancer cells.

26 Jun 2026

Rare Ebola strain may spread beyond Congo, study warns

A rare strain of Ebola that began spreading undetected in eastern Democratic Republic of Congo (DRC) in early April 2026 has now confirmed transmission in Uganda and is potentially on course to reach South Sudan, according to a new modelling study from the World Health Organization (WHO) published in The Lancet Infectious Diseases journal.

25 Jun 2026

Iron overload gradually increases neurons' vulnerability to neurodegeneration

Neurodegenerative diseases affect tens of millions of people worldwide. Among these, Alzheimer's and Parkinson's diseases are the most common; in the United States alone, the Alzheimer's Disease Association and Parkinson's Foundation report roughly 7 million people with Alzheimer's and another million with Parkinson's.

25 Jun 2026

Spermidine supplement improves COVID 19 vaccine response in older adults

As we age, the immune system gradually declines and becomes less effective at responding to infections and vaccines.

25 Jun 2026

Research may help pave the way for new vaccine targeting diarrheal disease

Research led by the University of Bergen (UiB) and NORCE may help pave the way for a new vaccine targeting one of the world's leading causes of severe diarrheal disease.

25 Jun 2026

US study shows updated COVID vaccines cut hospitalization odds by 55%

The 2025-2026 COVID-19 vaccines were associated with 50% estimated effectiveness against COVID-19-associated emergency department and urgent care encounters among immunocompetent US adults. They were also linked to an estimated 55% effectiveness against COVID-19-associated hospitalization, providing added protection beyond existing immunity from prior infection or vaccination.

24 Jun 2026

Study outlines legal challenges for fetal tissue research in Japan

Human fetal tissue research has contributed to advances in developmental biology, the study of congenital diseases, regenerative medicine, and vaccine development.

24 Jun 2026