Fig. 1From: SARS-CoV-2 seroprevalence and infection rate in Manila, Philippines prior to national vaccination program implementation: a repeated cross-sectional analysisData collection flow. Study enrollment took place over four periods, during which time the Philippines underwent varying levels of lockdown. The Oxford COVID-19 Government Response Tracker Stringency Index aggregates and summarizes the closure and containment policy indicators employed at national and subnational levels in response to the pandemic. It takes values between 0 and 100, with the most stringent government response set at 100Back to article page