This edition of Transmit features a full update from two of the PHA’s health protection teams: the gastrointestinal, waterborne disease and zoonoses team, and the respiratory infections team. Food poisoning trends and statistics are provided, alongside an overview of other gastrointestinal infections in 2009, including those acquired abroad. The respiratory team’s update gives a summary of tuberculosis (TB) in Northern Ireland in 2008 and provides provisional data for 2009.