Group A Streptococcal (GAS) infection in Northern Ireland monthly report. GAS are common bacteria and can be present on or in the human body, without causing infection which is known as colonisation. 

Measles infection in Northern Ireland monthly report. Measles is a systemic viral infection caused by the measles virus. For more information about measles please visit NI Direct | Measles.

Pertussis (also known as "whooping cough") in Northern Ireland monthly updates. Pertussis is a highly contagious, but vaccine preventable bacterial respiratory disease that is usually caused by Bordetella pertussis.