During the initial phase of containment, health authorities have developed procedures to take in charge suspected cases of infection and to follow up with their contacts. These procedures have been communicated to all physicians on several occasions. Since 12 March, the government has moved to a strategy of reinforcing the protection of vulnerable populations. Individuals are considered vulnerable if they are over 65 years of age or if they are already suffering from one of the following conditions: diabetes, cardiovascular diseases, chronic diseases of the respiratory tract, cancer, an immune deficiency due to a condition or therapy.
This strategy implies that efforts are focused on preventing the transmission of the infection to these people rather than on identifying any cases of COVID-19 in the general population. Those who return from a risk zone without showing symptoms, but have been potentially in casual contact with infected people, are advised to respect the following behaviour for the next 14 days: monitor symptoms daily (cough, breathing problems), measure temperature twice a day, wash hands frequently and properly, avoid contact with vulnerable and fragile people, continue usual activity.
A probable case of COVID-19 is defined as a person who shows symptoms compatible with an acute respiratory infection or, if these symptoms become worse, without any other medical reason. A confirmed case is defined as a person with or without symptoms with a positive COVID-19 test.
Since September 2020, the government obliges airlines to transmit passenger data to health authorities for contact tracing. The data is anonymised after two weeks
As of beginning of November, the tracing procedure via the declaration forms has been optimised to facilitate the work of the Contact Tracing team and to simplify and speed up contact with this team. People who have tested positive for COVID-19 and those who have had close contact with a COVID+ tested person can fill in the declaration forms online on the dedicated website of the Health Inspectorate covidtracing.public.lu or via the covid19.lu website. A link (covidtracing.public.lu) is also sent directly via SMS to those who tested positive for COVID-19 which they can then transfer with their reference number to their high-risk contacts.