Medical research

Researchers find no evidence that sperm counts are dropping

The widely held view that sperm counts in men are dropping around the world may be wrong, according to a new study by University of Manchester, Queen's University in Kingston, Canada and Cryos International, Denmark.

Diseases, Conditions, Syndromes

Specific nasal cells found to protect against COVID-19 in children

Important differences in how the nasal cells of young and elderly people respond to the SARS-CoV-2 virus, could explain why children typically experience milder COVID-19 symptoms, finds a new study led by researchers at UCL ...

Immunology

Evolution of the human immune system in the post-omicron era

It has been four years since the start of the COVID-19 pandemic. SARS-CoV-2 has yet to be eradicated and new variants are continuously emerging. Despite the extensive immunization programs, breakthrough infections (infection ...

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