Immunity to Covid-19: March 2023 update
How do our bodies defend against Covid-19? Read how immune responses differ across people, variants, reinfection, vaccination, and current immunisation strategies.

This POSTnote examines recent trends in food poisoning and some of the underlying factors and related issues. POSTnote 27. POST. 1991.
Microbes in food (1 MB , PDF)
Concern over the increasing number of food poisoning cases due to microorganisms was a major factor behind the establishment of the Richmond Committee on the Microbiological Safety of Food1 in 1989, and the Food Safety Act in 1990.
This POSTnote examines recent trends in food poisoning and some of the underlying factors and related issues.
Microbes in food (1 MB , PDF)
How do our bodies defend against Covid-19? Read how immune responses differ across people, variants, reinfection, vaccination, and current immunisation strategies.
This POSTnote will analyse available data on recent trends in distress linked to gender identity and lifespan trajectories in children and adults.
This POSTnote will explain plans to improve patient choice in the context of reforming the Mental Health Act.