EN 14683 2019 specifies the construction, design, performance, and testing requirements for medical masks that are intended to prevent infective agents from being transmitted from patients to staff during medical settings.
Is it safe to travel during the COVID-19 pandemic due to the fact that there is no common symptom for it? There is a possibility that the virus may cause a common illness like cough and flu but the illness is said to last longer. Therefore, you cannot be sure if you have the illness or not. It is best to ask questions before you travel to another place.