Since 2014/2015 SIR has cooperated with the Public Health Agency of Sweden to register all flu cases treated in intensive care units in Sweden - SIRI (SIR-Influenza Monitoring).
The purpose of SIRI is to be able to identify an unusual accumulation of cases as early as possible, map severe symptoms and risk factors, characterize viruses, monitor ICU load and follow the effects of measures such as vaccination and medication. The goal is also to use data retrospectively, in the face of a new future threat, as a basis for comparative evaluations of, among other things, the effects of implemented measures. New respiratory viruses arise with regularity and have on several occasions in recent years given rise to epi/pandemics such as MERS/SARS and now COVID-19 (Coronavirus Disease) caused by SARS-Cov-2. COVID-19 has been possible to register in SIR since March 2020.