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.

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Vaccine History

History of Vaccination

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Vaccine Production

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Vaccine Immunity

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Vaccine Delivery

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Hib Immunization

Vaccine Schedule

What is a VLP Vaccine?

Vaccination in Humanitarian Settings

What is an RNA Vaccine?

What is the Importance of Vaccination Coverage?

Latest Vaccine News and Research

Case report examines potential cancer risks after mRNA vaccination

A new case report was published in Volume 17 of Oncotarget on February 6, 2026, titled "Exploring the potential link between mRNA COVID-19 vaccinations and cancer: A case report with a review of haematopoietic malignancies with insights into pathogenic mechanisms."

12 Feb 2026

COVID vaccination during pregnancy not associated with neurodevelopmental problems in children

The mRNA COVID-19 vaccine is not associated with autism or other neurodevelopmental problems in children whose mothers received the vaccine immediately before or during pregnancy, according to new research presented today at the Society for Maternal-Fetal Medicine (SMFM) 2026 Pregnancy Meeting.

11 Feb 2026

Nanovaccine design boosts immune attack on HPV tumors

Throughout the past decade, Northwestern University scientists have uncovered a striking principle of vaccine design: Performance depends not only on vaccine components but also on vaccine structure.

11 Feb 2026

Study uncovers immune trigger behind vaccine-induced immune thrombocytopenia and thrombosis

A global research collaboration of scientists from McMaster University (Canada), Flinders University (Australia) and Universitätsmedizin Greifswald (Germany) uncovered why a small number of people developed dangerous blood clots after either receiving certain COVID‑19 vaccines or experiencing a natural adenovirus infection, and the answer lies in an unexpected case of misdirected targeting by the immune system.

11 Feb 2026

New strategy harnesses pre-existing antiviral immunity to boost anti-tumor responses

Because many different types of cancer cells overexpress programmed death-ligand 1 (PD-L1), this cell surface protein is a major target of cancer immunotherapy.

11 Feb 2026

Safety perceptions of major vaccines show significant drop over the past three years

In a winter marked by flu outbreaks, the persistence of Covid-19, and surges of measles cases across the United States, an Annenberg survey finds that a sizable majority of Americans think the three vaccines that combat these potentially deadly illnesses are safe to take, although perceptions of the safety of all three vaccines showed a statistically significant drop over the past three years.

10 Feb 2026

Researchers uncover mechanisms of three mismatch repair deficient high-grade glioma subtypes

Researchers have uncovered the mechanisms behind three unique subtypes of mismatch repair deficient high-grade gliomas.

10 Feb 2026

Study suggests shingles vaccine may help lower Alzheimer’s and dementia risk

A large observational electronic health record study found that older adults receiving the recombinant zoster vaccine showed substantially lower rates of diagnosed dementia compared with matched unvaccinated individuals. The association persisted after multiple sensitivity analyses, although causality remains unproven and longer follow-up is required given the long latency of dementia.

10 Feb 2026

Preexisting flu immunity may offer baseline protection against avian influenza

Are seasonal flu antibodies also effective against avian flu? A team from the University of Geneva (UNIGE) has shown that a specific type of antibody associated with the former virus—already present throughout the population—may offer baseline protection against the latter.

10 Feb 2026

US cancer institute studying ivermectin’s ‘ability to kill cancer cells’

The National Cancer Institute, the federal research agency charged with leading the war against the nation's second-largest killer, is studying ivermectin as a potential cancer treatment, according to its top official.

10 Feb 2026

Large Swedish study finds COVID-19 vaccination unrelated to fertility or childbirth rates

A Swedish registry-based cohort study evaluated whether COVID-19 vaccination affected childbirth rates among women aged 18 to 45 years during the pandemic period. No statistically significant association was found between vaccination, childbirth, or recorded miscarriage rates, suggesting demographic and socioeconomic factors likely explain observed fertility trends.

8 Feb 2026

Binghamton University receives $2.5 million to develop a next-generation avian flu vaccine

Outbreaks of avian flu at U.S. poultry farms led to more than $1.5 billion in losses over the last two years and drove egg prices to all-time highs in 2025.

6 Feb 2026

New analysis reveals hidden complexity in the vaginal microbiome

For decades, gynecological tests have relied on a simplified view of the vaginal microbiome, categorizing bacteria as either "good" or "bad."

6 Feb 2026

New DNA-based vaccine scaffolds boost targeted immune responses to HIV

One of the biggest hurdles in developing an HIV vaccine is coaxing the body to produce the right kind of immune cells and antibodies. In most vaccines, HIV proteins are attached to a larger protein scaffolding that mimics a virus.

6 Feb 2026

Griffith researchers on the cusp of new vaccine to prevent chikungunya

Griffith University researchers are on the cusp of a new vaccine to prevent chikungunya, a global health threat which attacks human joint tissue.

6 Feb 2026

Weak governance hinders One Health outbreak response in Africa

Across Africa, One Health is endorsed at the top but often breaks down where outbreaks start, writes Albert Ansah.

5 Feb 2026

Expanded vaccine supply allows resumption of cholera prevention campaigns

Global cholera vaccine supply has now increased to a level sufficient to allow the resumption of life-saving preventive campaigns for the first time in over three years, Gavi, the Vaccine Alliance, UNICEF, and the World Health Organization (WHO) announced today.

5 Feb 2026

Study reveals evidence of silent mpox exposure in healthy Nigerians

New evidence suggests that mpox may be circulating quietly among healthy Nigerians, with some infections occurring without the symptoms that typically trigger detection by health authorities.

5 Feb 2026

Gut microbial butyrate enhances mucosal vaccine antibody responses

A research team from POSTECH and ImmunoBiome in Korea, led by Professor Sin-Hyeog Im, has uncovered a new mechanism showing how butyrate-a short-chain fatty acid produced by gut commensal bacteria-enhances T follicular helper (Tfh) cell activity to promote antibody production and strengthen mucosal vaccine efficacy.

4 Feb 2026