Last updated: 30 January 2023

From the start of the pandemic up to 30 January, the Medical Service has been informed that 3402 (+7 cases to last week) members of the personnel (MPE and MPA) and 711 (+0 cases compared to last week) contractors / temporary personnel have tested positive for COVID-19. 

There have been cases of transmission on site, uniquely in situations where masks were not being worn. 

Anyone who works at CERN and experiences symptoms of COVID-19 should declare this immediately on the TRAMED application ( The Covid-19 Helpline provides advice to people who are ill or suspected of being ill, while asking them to self-isolate.
The Medical Service insists on the importance of contacting them without delay, as soon as a first symptom appears, even if it seems far removed from those of the COVID-19, and not to come to the site in case of doubt.
The correct application by all members of Personnel of COVID-19 measures at workstations greatly limits the number of close contacts.