Investigators will measure the level of anxiety and fear of SARS-CoV-2 virus during the balneological treatment in patients. They are interested in the effect of general trust and resilience on the level of anxiety state.~A number of between 300 and 800 inpatients are expected to get involved in the study. They suffer from cardiovascular disease, osteoarthritis, respiratory diseases and many others.
Investigators will measure the level of anxiety and fear of Covid during the balneological treatment in patients. They are interested in the effect of general trust and resilience on the level of anxiety state.