Introduction
After the first pandemic wave of coronavirus disease 19 (COVID-19)
caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2),
there are fears for a second large wave like what happened with the 1918
flu (Shanks et al., 2011). In low-affected countries, emergence of new
COVID-19 foci is likely to occur after relaxation of social distancing
interventions (e.g. South Korea). However, in severely affected
countries or regions such as Hubei in China, northern Italy, or Spain
data available to date (as of June 9, 2020) indicate a strong decline in
disease incidence after the initial epidemic, followed by occasional
peaks but without recording a second large wave. Observations from a
severely affected rural village in Spain provide additional insights.