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In Focus

The COVID-19 vaccine is just the most recent in Harvard’s long history of researching, treating, and helping to eradicate illnesses and diseases.

A watershed moment for vaccines

Vaccines are underfunded, understudied, and underappreciated as a vital tool in public health. Could COVID-19 be the start of a vaccine renaissance?

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Someone getting a shot in the arm

COVID-19 vaccine safety

Over the past year, results from a series of clinical trials have demonstrated the efficacy and safety of COVID-19 vaccines in preventing serious illness, hospitalizations, and deaths.

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Is vaccine misinformation affecting our health?

People hold signs at a protest against masks, vaccines, and vaccine passports
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COVID-19 vaccine protects mothers and their newborns

Small baby wearing a knit cap is held by a woman
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The high cost of the slow COVID vaccine rollout

woman administering vaccine to a patient.
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Why are you getting a COVID-19 vaccine?

woman in car having a vaccine administered.
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New research at Harvard Medical School

Scientists explore a new single-shot COVID vaccine

Peak immunity appears to last at least 11 months.

On the front line

Harvard faculty have been researching COVID-19 and working to develop effective COVID-19 vaccines and therapies.

How mRNA vaccines work
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How vaccines work

The mRNA COVID vaccine uses established research to create a safe and effective defense against coronavirus. In this video we explain how it works.

Harvard YouTube COVID playlist

graphic of a viral antigen.

LabXchange Simulation

Could you make a COVID-19 vaccine?

In this simulation you can design a sequence of experiments to generate a coronavirus vaccine.

Experiment now

History: past pandemics

Benjamin Waterhouse, co-founder of Harvard Medical School, is known as the first doctor to test the smallpox vaccine in the United States. The Countway Library features artifacts of his time in a virtual exhibit.

Virtual exhibit

The future of vaccines

Scientists and researchers at Harvard are hard at work developing new and better vaccines.

Cancer vaccines

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In this Wyss podcast, researchers discuss their collaboration developing an injectable cancer vaccine.

Learn about a different, implantable cancer vaccine also developed at the Wyss Institute.

Biomaterial vaccines

A virus

Effective vaccines could act as a defense against bacterial infections and some of their most severe consequences, including sepsis.

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Melanoma vaccines


Personalized vaccines designed to fight melanoma, the deadliest form of skin cancer, maintain their effects on the immune system years after inoculation.

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