**1. Introduction**

The coronavirus first appeared in the world at the end of 2019 in Wuhan, China. Very fast the virus spread beyond the borders of China, a global pandemic prevailed. Soon scientists identified a new strain of the virus that the World Health Organization named severe acute respiratory syndrome coronavirus 2 or SARS-CoV-2 for short. The disease has become better known as COVID-19 and has become part of the everyday life of people around the world. The virus continues to spread at a high speed and affects an increasing number of patients, and the death rate is increasing every day.

COVID-19 is currently the biggest global and health problem that countries are trying to deal with by introducing numerous epidemiological measures and maintaining social distance [1]. Although the appearance of the virus itself has taught us a lot so far, there are still many uncertainties regarding this virus, its origin, development, and spread of the disease, and they are being considered every day and applying new methods in the treatment. COVID-19 has changed the world and affected it in many aspects, and it left a big mark on the healthcare system. Increasing volume of work, increased number of seriously ill patients and dying patients, sick nurses, and thus a lack of staff to work are just some in a series of numerous problems that appeared or became even more pronounced during these pandemics. In addition to these problems, numerous ethical questions and moral doubts are increasingly emerging and are inevitable during the treatment and care of patients in this extremely difficult situation. COVID-19 put "on the second plan" the treatment of all other diseases in order to prevent the spread of the virus and the risk from the disease of immunocompromised and palliative patients. However, although the primary goal of this is to protect patients from even greater complications, it often has the opposite effect because certain therapies and examinations are delayed and the patient is not able to receive the appropriate one healthcare and protection. Infection with the coronavirus can cause numerous symptoms and signs of the disease. Considering the severity of the disease, symptoms can be divided into mild, medium, and severe. They are mostly connected with the respiratory tract, but numerous nonspecific symptoms of the disease may also be present; the diagnosis of the disease can often be difficult or the disease is not recognized in time. Respiratory symptoms of the disease are often very similar to a cold or the flu, so it is very important to distinguish whether it is a viral infection or flu, because the method of treatment and further procedure with the patient depends on it. Some of the most common symptoms of most patients are dry cough, elevated body temperature, rhinorrhea, headache, general weakness, and muscle pain [2]. Somewhat rarer and nonspecific symptoms of the disease can be nausea, loss of appetite, vomiting, and diarrhea. In very few cases, skin changes in the form of a small red dotted rash were also observed. Also, a symptom which appears very often and can be one of the first signs of the coronavirus is the loss of the sense of taste and smell (anosmia), which can be absent for several weeks after healing. Severe symptoms of the disease include pressure and pain in the chest, dyspnea, difficulty breathing, and feeling of suffocation. Patients with these symptoms should be hospitalized immediately for the treatment. Based on previous analyses, the average incubation is 5.1 days, and an infected person develops symptoms within 11.5 days of infections [3]. Lifestyle habits can play a big role in recovery, which can positively or negatively affect the repair, depending on the life habits of the person. Recovery is slowed down if the person is undisciplined and does not follow health instructions. For example, continued smoking, bad eating habits, too much fatigue from heavy physical activities instead of resting, not taking prescribed therapy on time, refusing therapy and the like, all that may slow down or prevent recovery. There are numerous health conditions that require special attention because the health condition of these persons is in itself impaired. Therefore, it is necessary to look at all the risks that may come into consideration. Extremely sensitive groups of patients, regardless of age, are people who have a transplanted organ, people who suffer from some malignant disease, people who have a certain autoimmune disease, people with severe lung diseases such as asthma and cystic fibrosis, people suffering from extremely rare diseases that are prone to severe infections such as combined immunodeficiency, people using high doses of immunosuppressants' medicines, pregnant women with severe heart

*Impact of COVID-19 on Mental Health of Oncology Healthcare Workers and Interdisciplinary… DOI: http://dx.doi.org/10.5772/intechopen.110876*

disease, and people with any heart disease. All of these diseases and conditions should be kept in mind, and first of all protective measures should be taken to prevent the occurrence of the disease. It is the best method of preventing any complications and unwanted deaths. There are many aspects of staying in the workplace with increased risk of infection which may affect both mental health and well-being. COVID-19 is a contagious disease, and healthcare workers must deal with potentially harmful problems like prolonged fear of being infected and spreading the disease to the family members, insufficient supplies in personal protective equipment, inconvenience of wearing them, extended working hours, sudden changes in a work schedule, additional tasks, excess work, pressure as well as prejudice and social fears. In response, workers may develop a range of behavioral (e.g., effects on performance), physical (e.g., headache, gastric disorders, etc.), and psychological (e.g., mood swings, decreased motivation, depressed thoughts, and isolation) reactions [4]. Concerns are now being raised about the mental health, psychological adjustment, and recovery of health professionals treating and caring for patients with COVID-19. This pandemic poses a major challenge to social, economic, and, above all, the psychological resources of the population. Undoubtedly, healthcare workers are the most exposed category. Supporting the mental health of healthcare workers is a critical part of the public health response.

## **2. Consequences of mental health in oncology health workers**

Cancer is a serious disease, probably the most serious of all, and treatment is very important. The information we constantly receive about COVID-19 can be disturbing. People who have overcome cancer or are still struggling with a malignant disease, as well as their loved ones, can be very worried, considering that this disease and its therapy can reduce the body's ability to fight the coronavirus infection. Maintaining physical distance, frequent and thorough hand washing, avoiding gathering in groups, disinfecting surfaces, and avoiding touching the face with unwashed hands can be a good strategy for everyone, but strict adherence to these measures is especially important for oncology patients who may be immunocompromised. The term "immunocompromised" refers to individuals whose immune system is considered significantly weaker compared to the immune system of a healthy adult. The primary role of the immune system is to defend the body against infections.

"Immunocompromised" people are at a higher risk of being infected with an infectious disease, such as the viral infection of COVID-19. There are many reasons why the immune system can be weakened, among others: if a person suffers from cancer, diabetes, heart disease, if the person is elderly or if he is a smoker. Oncology patients have a significantly higher risk of their immune system becoming "compromised" or weakened. It mostly depends on the type of cancer, the type of oncology therapy they receive, their age, and other existing diseases. The risk is greatest at the time of active oncological treatment, i.e. during the period when the patient receives chemotherapy. There is no exact test that can determine whether someone is "immunocompromised" or not, but based on blood findings such as a reduced number of white blood cells or a reduced number of antibodies (immunoglobulins), it can be concluded that the immune system is significantly weakened [5]. Stress at work, i.e. critical incidents with which oncologists meet, can cause symptoms post-traumatic stress, anxiety, depression, and syndrome combustion. Factors that most often cause stress in working with oncology patients are the following: the severity of the diagnosed

disease, the increase in the patient's expectations, unsatisfactory care for the patient, the inability of the doctor to control the outcome of the results of his own work and care for the patient, problems related to the patient's family, lack of staff and technology in order to provide the patient with appropriate treatment, too much responsibility of the doctor, communication problems within the team that cares for the patient, too much workload, administrative problems mechanism, working conditions, low salaries, inadequate social support, the status of young newly employed doctors, the end of a doctor's career, lack of opportunities for promotion, decline, and reducing the feeling of gratitude of patients and superiors [6]. Work in the oncology department is stressful even when there is no epidemic/pandemic. Because in the most active phase of life, work takes away most of the time it is to be expected that the work environment will become a source of great stress and loads. Accumulation of stress is the most common cause of mental difficulties, while anxiety is the most common condition with which nurses and technicians in oncology, but also in nursing in general, they meet almost every day. In nursing practice, there is often an excessive workload, but too little load can also be a cause of stress. Too little load is the result of repetitive, routine, and insufficiently stimulating work tasks. Quantitative work overload implies too many tasks in a given period of time, while qualitative indicates a lack of knowledge and experience in performing certain tasks. Both types of work overload and lack of time to perform tasks are significant risk factors in the development of anxiety and depression. Overtime, shift work and on-call combined with night work affect the bio-psychophysical rhythm of a person's functioning. Accompanying complaints appear in the form of chronic fatigue, decreased immunity, gastrointestinal disorders, headaches, and others. Work with antineoplastic therapy is by its nature stressful due to its complexity, and potential complications can cause fear of making a mistake and at the same time additionally endanger a person's life which is going through its own stressful, and in some cases, traumatic experience. On the other hand, the work of cytostatics potentially endangers the health of the person who prepares and applies the therapy and comes into contact with bodily secretions of a person undergoing active treatment. The demandingness of this part of healthcare can impose a sense of personal responsibility for the patient's health and life. In addition to the harmfulness of the therapy, the potential risk and danger for the healthcare workers are represented by the patients with serious mental disorders as a result of primary mental illness and/or secondary in relation to the diagnosis of a malignant disease or the use of certain drugs. In addition to the harmfulness of the therapy, the potential risk and danger for the healthcare workers are represented by the patients with serious mental disorders as a result of primary mental illness and/or secondary in relation to the diagnosis of a malignant disease or the use of certain drugs. Epidemics and pandemics uniquely threaten health, because effective treatment or medicine is often not available. Unlike other types of emergencies, these threats to health can take a long time, with a high degree of uncertainty about progression or disease control. Healthcare workers were involved in the fight during every epidemic/pandemic and risked their lives. In such emergency situations, high-risk situations subject to numerous competing duties, such as duties toward patients, protection from unnecessary risk of injury, duty toward family, colleagues, and society, which can cause great stress and even lead to long-term psychological consequences. Symptoms associated with mental health problems predominantly included expression, anxiety, or stress. This can lead to additional cognitive and social problems, as well as long-term problems, including post-traumatic stress disorder (PTSD). These problems can affect the function in the workplace and negatively at

### *Impact of COVID-19 on Mental Health of Oncology Healthcare Workers and Interdisciplinary… DOI: http://dx.doi.org/10.5772/intechopen.110876*

work environments can lead to mental health problems. Each person reacts and focuses on stressful situations differently. Some focus on solving the problem, while others deny reality, struggle with change, feel guilty, or withdraw. If stress exceeds human strength and exhausts the ability to cope, it can lead to pathological reactions. Among other things, stress is responsible for reducing professional satisfaction and well-being of the individual, as well as stagnation in personal development, absence from work, reduction in quality of service, or more errors. The pandemic has a significant emotional impact on patients but also on health workers who are in charge of helping the infected. Their workload is further increased by the high and persistent risk of exposure and death, by separation from their loved ones, which may be forced or due to extended work shifts. Watching of traumatic images of their seriously ill or dying patients in an overloaded environment with chronically low drug supplies, experiencing hopelessness due to large human losses despite all efforts to provide care, management of human bodies, experiencing quarantine, witnessing the death of their colleagues, lack of reinforcements and replacement, fatigue, and burnout are just some of the traumas they have to endure during the course of work. Supporting the mental health of healthcare workers is a critical part of the public health response. Not only did the pandemic change the way and the conditions we work in, bringing with it stress, anxiety, and other psychological problems, but also did it change the tasks and activities assigned to pharmacists. One of the most significant changes the COVID-19 pandemic brought to the pharmacy practice was vaccination. Prior to Covid-19, the vaccination service delivery was available in a limited number of countries; during the worldwide response to the pandemic, it became a routine service delivered by pharmacists (among other healthcare workers) in various settings. Although the approval/authorization of vaccines against SARS-CoV-2 meant having new and effective means of fighting against the virus and at the same time the beginning of the control of the pandemic, it also probably brought up more questions than answers. Would the vaccines be safe? Would they be effective? How will the vaccines be distributed? And stored? Who will prepare them and administer them? Massive administration of the doses all around the globe would provide equally massive amounts of clinically relevant data. Mental health is a prerequisite and fundamental determinant of quality of life. Research on the psychological effects of outbreaks of infectious diseases such as SARS epidemics and H1N1 pandemics on mental health shows consistent patterns of responses by healthcare workers. Staffing challenges include not only increased workloads that create such epidemics and pandemics but also the fear of the possibility of infecting oneself, one's family, and loved ones. Working in a new environment where protocols are often changed, personal protective equipment is applied, with overtime, and most importantly providing caring for the sick in new circumstances causes a great mental burden in healthcare workers. In many cases, the infection spreads rapidly and as it is seen with the COVID-19 infection, difficult decisions had to be made, for example, about who is suitable for intensive treatment and who is not. They understand the gravity of the situation very well, healthcare workers, and less so by the public, which makes it difficult to adapt to the situation for the purpose of adherence to epidemiological measures. Infection control measures and use of personal protective equipment put healthcare workers in aggravating circumstances due to more difficult communication with patients, and staff may feel guilty that such isolated patients "die alone." Many healthcare workers will become infected, with the possibility of developing a severe form of disease that can result in death. Research has shown that health workers who had to go into isolation feel guilty for leaving the "front" and colleagues.

They also fear the possibility of infecting their families, loved ones, and patients. As the profession of a healthcare worker is a profession which has an increased tendency for teamwork, in quarantine health workers suffer from loneliness, boredom, and exhaustion. The COVID-19 pandemic has caused many changes in our lives. Numerous challenges have emerged that need to be addressed, both in professional and private life. Uncertain forecasts, inability to plan and forecast, measures of limited movement, job losses, and financial losses are just some of the stressors. Cancer patients, whose immunity is compromised by therapies, belong to the most at-risk group and are justifiably concerned about their health. They need to be reassured but advised to follow all instructions. In individual counseling, oncology patients should be helped to organize their daily routine, as everyone who is in self-isolation is advised. The only difference is that patients need to continue their treatment, and their outings from the safe home, to be reduced as much as possible, just to go to therapy. All other consultations with physicians should be conducted by telephone or online communications. In addition to patients who are already being treated for cancer, those patients who have just been diagnosed with a malignant disease also feel great fear. They are afraid that treatment will be delayed, and because of that, the treatment outcomes will not be good either. Ultimately, as a risk group, they fear infection more than nonrisk individuals, because the mortality of oncology patients infected with the coronavirus virus is far higher than the mortality in the general population. But cancer mortality is far higher, and they should be encouraged to continue their treatment. People who have some symptoms that may indicate the appearance of malignancy should be advised to go to their family doctor, to check if they can postpone the tests or to do them if the doctor advises. The data of some hospitals that they have fewer registered oncology patients is worrying. This does not mean that the incidence has dropped, but that patients do not go to the doctors for fear of the corona virus.
