Lockdown measures and relative changes in the age-specific incidence of SARS-CoV-2 in Spain

The first months of the SARS-CoV-2 epidemic in Spain resulted in high incidence and mortality. Little is known about the epidemic dynamics in different age groups, including the relative effect of the lockdown measures introduced on March 15, and strengthened on March 30 to April 14, 2020 when only essential workers continued to work.