Impact of COVID-19 restrictions on hourly levels of PM10, PM2.5 and black carbon at an industrial suburban site in northern Spain

Hospitalizations for Chronic Obstructive Pulmonary Disease Exacerbation During COVID-19

“…The association between COPD exacerbations and preventive measures questions the role airborne infections play in provoking COPD exacerbations. Other known risk factors were also decreased during the pandemic (eg, small particulate matter levels were reduced 5 ), and a single underlying cause behind COPD exacerbations is unlikely. Nevertheless, the “on-off-on” outcome of protective measures showed how epidemiology can provide evidence mimicking a gene knockout–rescue model.…”