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.

What are the Different Types of Vaccines?

Plant-Derived Vaccines

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

What is a Toxoid Vaccine?

A New Breed of Vaccine: Exploring Doggybone ™ DNA Technology

What is an Inactivated Vaccine?

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

Vaccine Excipients

What is a VLP Vaccine?

The Future of Vaccines

Vaccine Schedule

See more featured articles »

What is a Subunit Vaccine?

What is a DNA Vaccine?

Transforming Vaccine Design: The Promise of Systems Biology

History of Vaccination

How are Vaccines Stored?

Vaccine Effectiveness

Could there be a Salmonella Vaccine?

What are Nanoparticle-Based Vaccines?

What is an RNA Vaccine?

What are the Main Causes of Vaccine Hesitancy?

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

Insight into Personalized Vaccines

What are Vaccines?

Vaccine Immunity

What is Immunobridging?

Vaccine Delivery

What is a Vaccine Breakthrough?

What is a Non-Replicating Vaccine?

What is the Importance of Vaccination Coverage?

Vaccination in Humanitarian Settings

What are Adenovirus-Based Vaccines?

Role of Computer Modeling in Vaccine Development

Hib Immunization

What is a Live-Attenuated Vaccine?

Vaccine Production

Investigating the Importance of Investing in Vaccine Manufacturing

How Veterinary Vaccines Affect Human Health

Vaccine History

What the Newest mRNA Vaccines Could Do Beyond COVID

Latest Vaccine News and Research

Cross-reactive T cells target measles and dangerous Nipah viruses

T cells are some of the immune system's most important warriors. They can stop tumor growth and even fight off severe infections.

2 Jun 2026

Building quality into drug development for safer, faster medicines

Discover how quality-driven drug development and AI accelerate safer medicines, reduce risk, and improve patient outcomes.

From Thermo Fisher Scientific – Pharmaceutical and Biopharmaceutical Solutions 2 Jun 2026

New ultrasound pacemaker design promises minimal recovery time for cardiac patients

MIT engineers have developed a noninvasive pacemaker that stimulates the heart using ultrasound. The design could one day provide a surgery-free alternative to traditional cardiac implants.

2 Jun 2026

Antibiotic-free therapy seeks to prevent newborn meningitis by blocking E. coli

Newborn meningitis is one of the most dangerous childhood infections. It is often life-threatening and can cause serious and lasting damage, including developmental problems, in the children who survive.

1 Jun 2026

DRC and WHO reaffirm strong partnership to contain Ebola outbreak in Ituri Province

The Government of the Democratic Republic of the Congo (DRC) and the World Health Organization (WHO) reaffirm their strong partnership and shared commitment to protect the health and well-being of the people of Ituri Province and the nation at large, following the joint mission to Bunia led by Dr Samuel Roger Kamba, Minister of Health, Mr. Patrick Muyaya Katembwe, Minister of Communication and Medias, and the visit of WHO Director-General Dr Tedros Adhanom Ghebreyesus.

1 Jun 2026

Pediatric influenza vaccination effectively protects young children

Pediatric flu vaccines significantly reduce the number of childhood cases of influenza, new research from Harvard Medical School confirms.

1 Jun 2026

Vaccine and drug combination cuts melanoma recurrence by half

The combination of a vaccine and a drug, which both harness the immune system to attack cancer cells, has proven successful in cutting the risk of skin cancer recurrence by 49 percent, a new study shows.

1 Jun 2026

Tick protein discovery could help prevent disease transmission

Few creatures inspire as much universal dislike as ticks. Though small, these parasites have an enormous impact on human and animal health. Each year, ticks spread viruses and bacteria that infect people, livestock, wildlife and pets around the world.

29 May 2026

Survey reveals critical knowledge gaps in maternal health recommendations

Most Americans know that how well a mother takes care of herself before and during pregnancy affects the health of a baby, but many people remain unclear about some specific maternal health recommendations, including when to start avoiding alcohol, according to a new nationally representative survey from the Annenberg Public Policy Center (APPC) of the University of Pennsylvania.

29 May 2026

WHO prioritizes candidate vaccines and therapeutics for Bundibugyo virus

In response to the current outbreak of Ebola disease caused by Bundibugyo virus occurring in the Democratic Republic of the Congo, with cases also reported in Uganda, WHO convened several of its expert and advisory groups.

29 May 2026

Experimental vaccine triggers broadly neutralizing HIV antibodies in macaques

For years, researchers have been hoping for vaccines that protect people against not just one strain of HIV, but every strain of the quickly mutating virus.

28 May 2026

New study tests vitamin D analog against pancreatic cancer

A small clinical trial led by Dana-Farber Cancer Institute researchers put a Salk Institute idea to the test in patients: that activating the vitamin D receptor can help reshape the protective environment surrounding pancreatic tumors in ways that could make the notoriously difficult-to-treat cancer more vulnerable to therapeutic treatments.

26 May 2026

Dog daycare outbreak exposes gaps in puppy leptospirosis vaccinations

A 2021 outbreak of leptospirosis that sickened more than 200 dogs in Los Angeles County reveals critical gaps in vaccination practices and raises broader concerns about the spread of the disease between animals and people, according to new research led by the University of California, Davis.

26 May 2026

Scientists urge advocacy to protect vital global vaccine research

Scientists and physicians should advocate to protect the vaccine research infrastructure that has saved an estimated 154 million lives over the past 50 years, according to a new commentary by researchers at Weill Cornell Medicine and the University of Washington.

22 May 2026

Boston Children's scientists create new booster-free mRNA vaccine strategy

In a new study published in Nature Immunology, researchers at Boston Children's Hospital demonstrated that pairing the original COVID-19 mRNA vaccine with an immune system enhancer, known as an adjuvant, extended the duration of the vaccine's protection in mice from a few months up to two years.

22 May 2026

AI-created miniproteins show promise for targeting hard-to-treat diseases

G protein-coupled receptors, or GPCRs, sit in the plasma membrane, the boundary that defines the inside and outside of a living cell. They communicate with nearly every physiological process in our bodies - from the ability to see and smell, to sensing of adrenaline, insulin, nutrients and medicines.

21 May 2026

PAHO and The Carter Center join hands on the elimination of onchocerciasis across the Americas

The Pan American Health Organization (PAHO) and The Carter Center signed a Technical Cooperation Agreement today to strengthen collaboration on the elimination of onchocerciasis — also known as river blindness — and other communicable diseases in the Americas.

21 May 2026

New immuno-infrared sensor aids in early diagnosis of Alzheimer’s and Parkinson’s disease

An early start to treatment is crucial to successful therapy. A new sensor is helping with early detection.

21 May 2026

Most Americans misunderstand which sexually transmitted infections have preventive vaccines

While data from the Centers for Disease Control and Prevention (CDC) show that the total number of U.S. cases of three sexually transmitted infections (STIs) declined from 2022-24, infection rates remain 13% higher than a decade ago. CDC provisional data show more than 2.2 million U.S. cases of chlamydia, gonorrhea, and syphilis were reported in 2024.

21 May 2026