Varga et al. analysed survey data from Denmark, France, the Netherlands, and the UK to determine what effect lockdown interventions in each country had on the mental health of their respective citizens. The authors were particularly interested in loneliness, as that is well-documented as a common risk factor for depression and anxiety. They found that though people were worried in general about the pandemic, government announcements and interventions did not increase this worry. Across all countries, the level of anxiety was highest during March, when lockdown measures were initially implemented, but gradually decreased over time. A majority of participants reported being worried about someone they care about becoming sick. Young people (<30 years old), people who have been previously diagnosed with a mental illness, people diagnosed with a chronic illness, and women had higher levels of reported loneliness. By recognizing these more susceptible groups, the authors hope that in future pandemics or public health crises, the government can pay more attention to these groups and provide more focused interventions to help curb loneliness.