Introduction: At the end of February, the first cases of infection with the COVID-19 virus appeared in Croatia, in mid-March we encountered the first quarantine and a series of prohibition measures. The virus spreads between people during close contact, through small droplets of saliva created by talking, sneezing or coughing from an infected person. Because the droplets fall on the ground or surface, and do not remain in the air for a long distance, people can become infected by touching a contaminated surface and then touching their face. The high numbers of infections and deaths that are reported daily to the population increase feelings of stress, anxiety and depression. Stress is a set of changes in behaviour, physiological and emotional reactions if a person perceives an event as threatening. Coping with stress can depend on a person's age and gender. In dealing with the symptoms of stress, we can often be supported by the family, while young people with experience of life in alternative care, who have left the system, and those in some form of post-treatment often do not have this opportunity and face many obstacles. Objective: To check whether there is a significant difference in the perception and concern of the COVID-19 pandemic between young people from the general population and young people in post-treatment, and to determine whether young people from post-treatment are more affected by stress due to their life circumstances because of the fact that they do not have the psychological, emotional and financial support of their families. Methods: An anonymous survey will be conducted through social media networks. The survey will be sent to young people from post-treatment to the e-mail addresses of various associations and institutions, such as Udruga Igra, Udruga Breza, Croatian Red Cross and through various social media networks, if they do not have access to the internet, they will be able to solve the survey in agreement with the associations when they come for counseling. The survey will be adapted and translated into Croatian, COVID Stress Scale (CSS) questionnaire, originally published by Taylor and associates. Results: One hundred and sixty respondents participated in the research, the respondents are youth from the general population (103), and youth from post-treatment (57) which grew up in some form of alternative care aged 18-29. Data analysis revealed that young people from the general population have more pronounced symptoms of stress related to the COVID-19 pandemic than the group of young people in post-treatment. This rejected the proposed hypothesis. The values are very low for both groups, and it can be concluded that young people from the general population have symptoms of stress, but to a lesser extent. Conclusion: Although the hypothesis of this research was rejected, in some studies it has been proven that young people from post-treatment are more susceptible to stress, and occasionally develop a very pessimistic attitude towards life that tells them that nothing can change, and that their ideas and opinions are not valuable. Such difficulties can lead to psychological problems in young people. Also, in these situations of pandemic, quarantine and isolation, it is necessary to normalize seeking psychological help if we need it.