The crisis can be caused by natural or technological factors. Crises that have escalated into a catastrophe indicate a late or poor response from affected society. It is vital to know the expected crises / disasters specific to a particular area and to prepare in advance by developing specific action protocols. Most catastrophes do not occur only once, but repeated, behaving cyclically. The disaster cycle includes preparation, response, recovery, and mitigation. Emergency / crisis health care begins immediately after the event. Good triage forms the basis of the correct response to the resulting condition. It is based on stabilization, recovery and return to everyday health care. The priority is to save as many lives as possible and recover the injured as quickly as possible. During unforeseen emergencies, equipment, and sometimes institutions as well, are damaged, therefore is important to assess the available sources. Depending on the type of disaster that has occurred, an action plan should be developed. At the beginning of 2020, the Republic of Croatia, together with the rest of the world, started to fight against the coronavirus pandemic, and the capital Zagreb was hit by another disaster in March 2020, a devastating earthquake, which caused serious damage to city hospitals. The result was the additional pressure on the health system and the need to reorganize existing procedures and strategies to mitigate and respond to the pandemic. In addition to providing health care to patients, a particular challenge after the earthquake was to adhere to all necessary epidemiological measures given the course of the coronavirus epidemic.