A common nasal spray may lower the risk of getting Covid-19, a new study shows. Dr. Leana Wen discusses what this all means as coronavirus cases rise.

Amid the uncertainty surrounding eligibility for and access to the latest Covid-19 vaccine, a new study has found that a ...

Here's what to know about the latest COVID strain - and how to tell if your at-home test is still good to use.

A feasibility study in Germany found that concertgoers strongly supported medical detection dogs for COVID-19 screening, with ...

As climate change and human activity threaten freshwater ecosystems like lakes and rivers, it’s more important than ever to know how the species that inhabit them are being impacted. But traditional ...