We know that a substantial number of people infected with the coronavirus are asymptomatic, and there is anecdotal evidence that this group can transmit the virus, However, there are few reliable estimates on the proportion of people with Covid-19 who don’t show symptoms, and their overall contribution to the spread of the virus.
This information is crucial for health policymakers to develop the most effective response strategies, including exiting from lockdowns. Using data from the Diamond Princess cruise ship, we aimed to help fill this knowledge gap.
