Diseases, Conditions, Syndromes

Flu vaccine may not protect against main flu strain: study

(HealthDay)—This season's flu vaccine may do little to prevent infection with the main circulating virus strain because the strain has changed since the vaccine was developed, a new study suggests.

Immunology

Nasal vaccine may aid fight against new viral variants

The emergence of COVID-19 variants such as delta and omicron have sent scientists scrambling to determine whether existing vaccinations and boosters are still effective against new strains of SARS-Cov-2.

Immunology

What happens to our immune systems when we get a booster?

Questions about COVID-19 vaccine boosters—like who is eligible and how to choose one—have dominated scientific discussions, news headlines, and dinner-table conversations recently, but the practice of giving our immune ...

Diseases, Conditions, Syndromes

How will Delta evolve? Here's what the theory tells us

The COVID-19 pandemic is a dramatic demonstration of evolution in action. Evolutionary theory explains much of what has already happened, predicts what will happen in the future and suggests which management strategies are ...

Diseases, Conditions, Syndromes

Chinese man hospitalized with H5N6 bird flu

A man in China has been hospitalized with the H5N6 strain of avian flu, which is one of several potentially dangerous strains that can infect humans.

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