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COVID-19: What is a variant?

New variants of COVID-19 are forcing governments around the world to tighten restrictions to stop the increased spread of new forms of the virus. But what exactly is a variant? SUBSCRIBE to our YouTube channel for more videos: Follow us…

The Ageing Immune System (IMMUENZA)

With age, the human immune system becomes less effective at tackling infections and less responsive to vaccinations. As a result of this, the aging immune system is associated with chronic inflammation, which increases the risk of almost all conditions linked…