Karl Knights' isolation after the 2020 Covid lockdown has lasted longer due to immuno-suppression.

Locally-sourced immunoglobulin has so far been used to treat more than 200 people.

After being struck down by winter illness, the BBC's James Gallagher goes in search of ways to boost his immune system.

Babies with a weakened immune system aged six months and upwards can now have the booster jab.

A professional boxer shares her colitis diagnosis on social media in the hope of inspiring others.

Jennifer, who has numerous health conditions, says she needs more protection from Covid-19.

A lot of us know someone who has felt pretty rough with the most recent form of the virus.

A discovery gives experts new ideas for developing vaccines to treat or even prevent cancer.