Spoiler: A lot of people cried wolf at the outbreak of the Corona crisis. Media reports of shortages of medical goods led to demands for increased production inside the EU of such goods. These demands came at the same time as some countries closed their borders and prevented exports of medical goods to other countries.
But these demands have been proven wrong. Most medical goods were produced within the EU, and trade with medical goods increased dramatically during the crisis eliminating the shortages. This and earlier experience from trading with the rest of the world show that decreased globalisation and specialisation will give us fewer resources and make us less resilient when future pandemics occur.
The export restrictions were counterproductive. The correct policies for combatting pandemics are trade-facilitating. Lowering tariffs and reducing the number of Non-Tariff Trade Barriers are obvious policies. In fact, decision makers across the world have realised this and have now introduced trade-facilitating measures for covid-19 goods that cover more trade than the trade-restrictive measures that were initially introduced. The correct policies within the EU is of course to make sure that the functioning of the Single Market is not harmed by trigger-happy politicians.