The article looks at how different countries changed their trade policies during the COVID-19 pandemic in response to health needs like medical supplies and food. They collected data week by week and found that starting in February and March 2020, many countries made trade policy changes. Some countries limited exports and made it easier to import, while others focused on only one of these. Surprisingly, some countries didn't change their trade policies at all. The study shows that each country's approach was different, leading to lots of questions about why they chose their strategies and how it affected trade and prices of important products.