<p>In this GENeral Document, Eurovent presents general and basic recommendations on the operation of ventilation systems during the coronavirus pandemic. The following document also provides additional sources of information on COVID-19.</p><p>→ Please <a href="https://www.eurovent.eu/?q=articles/covid-19-%D1%80%D0%B5%D0%B4%D0%BE%D0%B2%D0%BD%D0%B0%D1%82%D0%B0-%D0%B8-%D0%BF%D1%80%D0%B0%D0%B2%D0%B8%D0%BB%D0%BD%D0%B0-%D0%BF%D0%BE%D0%B4%D0%B4%D1%80%D1%8A%D0%B6%D0%BA%D0%B0-%D0%BD%D0%B0-%D0%B2%D0%B5%D0%BD%D1%82%D0%B8%D0%BB%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%B8%D1%82%D0%B5-%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B8-gen-110500" target="_blank" rel="noopener">click here</a> for the Bulgarian language version of this GEN Document (courtesy of TANGRA): <strong>COVID-19: Редовната и правилна поддръжка на вентилационните системи</strong></p>