I have two and a half minutes. Okay.
Just now, you said that tracing was very limited to the first cases, the passengers who were most at risk, given the way in which the virus spreads.
How long does it take to find those people? Once they have been tracked down, for how long are they monitored? It is possible that they have no symptoms. Is that during the incubation period? Specifically, how do you do what you do?