Finland will start tracking the spread of the new coronavirus in its population with randomised antibody tests, its public health authority has said.

According to Reuters, the main hospitals will mail invitation letters to randomly chosen citizens of all ages to be tested for the antibodies which patients suffering from Covid-19 develop, including those who have contracted the illness without showing any symptoms.

“The main aim of the research which will begin now is to get up-to-date information on how large a proportion of the population has formed antibodies that indicate an earlier encounter with the coronavirus,” the Finnish Institute for Health and Welfare said in a statement.

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