In diagnosing COVID-19, false negative findings from the biological sample taken from a mucosal swab of the upper respiratory tract and tested with the real-time reverse-transcription polymerase chain reaction (RT-PCR) technique have been reported. This patient has had a proven contact with an infected person, clear symptoms of viral respiratory disease, yet negative test results on the fifth day of self-isolation. On repeated test after 48 hours, on the 7th day of isolation, due to persistence of some symptoms, he tested positive for SARS-CoV-2. The existence of symptoms and characteristic sings after laboratory and radiological analysis of the patient prompted the repetition of the tests, which at the end led to the confirmed diagnosis and the possibility for adequate treatment of the patient as well.

<jats:p>nema</jats:p>

<jats:p>nema</jats:p>

This article should be cited as follows: Igić R. Pharmacologist's view of the new corona virus. Scr Med 2020;51(1):6-8. Despite many advances in the prevention and treatment of infectious diseases, the global spread of infections is accelerated by close contact among concentrated populations. A pandemic caused by a new type of coronavirus (SARS-CoV-2) continues to spread across the globe. This new disease attributed to COVID-19 emerged a century after the Spanish flu pandemic, which affected one-third of the world's population, killing more than 50 million people.1 The disease, caused by the H1N1 virus, has been around for less than two years and it is still unclear what contributed to its termination; possibly a mutation of the virus reduced its viral strength. Since information about biological sciences and human medicine is far more advanced today than at the beginning of the 20th century, it is expected that the current pandemic will be contained, regardless of the potential for viral mutation. Scientists and doctors now face an urgent task how to treat numerous sick people and stop the spread of this infection. The pandemic urgently requires identification of preventive measures, along with optimum means of diagnosis and treatment and data on dissemination of the infection, duration of incubation, clinical features of the disease, along with the best means of diagnosis and treatment for a very large number of people, and ultimately the long lasting consequences of the disease. In addition, we must identify pathways for the spread of the virus, its persistence on various surfaces and means of its inactivation.2

The aim of the work was to carry out a modal analysis of a multiple structure. Own forms of oscillation of the structure for five tones were obtained through the vector iteration process and were presented in table and graphic form. Using the different methods (Time history, SRSS and CQC), a calculation of the displacements was performed. Theoretically, all three methods are described and the results of the calculation for each of them are obtained. A comparison of the results, for the three methods in a given time interval, is graphically shown. Also, the results are compared which are all the same in all three methods. The modal seismic analysis of Spectral Theory was also performed. It can be concluded that by comparing the method of Time history and Spectral theory their results correspond to the maximum modal displacement.

Coefficients of organs, along with haematological characteristics, represent an important means of monitoring the health and condition of fish. Organosomatic indices show the state of organ systems and individual organs. They manifest as changes in size, which are reflected through a decrease or increase, under the influence of environmental factors. Chub individuals from the Suturlija River were used for analysis. The paper analyses the Fulton's condition factor, heart, liver, and spleen coefficients as a condition factor. Furthermore, the values of total length, standard length, and body weight were determined for all individuals. Also, certain haematological parameters were analysed in the paper: total leukocyte count and differential blood count. A total of 19 chubs caught from the Suturlija River were analysed. The obtained result of Fulton's condition factor (1.53) indicates favourable habitats for chub individuals in the Suturlija River. The results of organosomatic indices are without major variations between individuals (CSI = 0.184, SSI = 0.992, HSI = 0.133). The mean leukocyte count was 45.857x109/l, with the highest proportion of lymphocytes in the differential

Heavy metals belong to a group of substances, which, after reaching a natural habitat, can manifest various negative effects. This paper analyses heavy metals (Cu, Cd, and Pb) in the Una river and fish samples, whereby individuals of grayling (Thymallus thymallus) were used for analysis. The samples were taken at three locations at the Una river: Ripac, Hatinac, and Grmusa. Alongside with the examination of the content of heavy metals, quality of water was tracked, including the following parameters: temperature, pH, electrical conductivity, dissolved oxygen, suspended matter, BPK5, KPK – Cr, total nitrogen – N, total phosphorus P, sulphates, chlorides, nitrites – NO2, nitrates – NO3, fluoride, and heavy metals (Cu, Cd, and Pb). Besides the content of heavy metals, proteins, fats, water, carbohydrates, and mineral matter were found in the grayling fillets. Amount of heavy metals (Pb, Cu, and Cd) were under maximum allowed concentration (MAC).             Key words: heavy metals, water, fish.

On September 9-12, 2019, I traveled to Beijing, China for the World Congress of Neurosurgery. I was eager to attend the biggest event of my profession for two reasons. One was my nomination for second vice-president of the World Federation of Neurosurgical Societies (WFNS). The second reason was to learn about Chinese culture for the first time in my life. I was honored to be elected for an officer position of the WFNS and I tremendously enjoyed the grandiosity of the Great Wall of China (Figure 1), the Forbidden City, and Summer Palace; I also enjoyed trying authentic Chinese food.

No abstract available.

OBJECTIVE To describe the technical nuances of multimodal transseptal-transsphenoid surgery for pituitary tumors using a combination of microneurosurgery, neuroendoscopy, and electromagnetic neuronavigation. MATERIALS AND METHODS A transnasal approach to the sella is performed endoscopically and widely exposed by an otolaryngologic surgeon. Surgery is next performed by the neurosurgeon with microscope and neuronavigation for microsurgical resection of pituitary tumors. Neuroendoscope is also used at the end of surgery to confirm tumor resection and inspect operative site. During surgery, the patient's head, angle and height of the microscope, and position of the table are repositionable to allow for multiple angle views. Abdominal fat harvested prior to the procedure is used to ensure cerebrospinal fluid seal. RESULTS The senior author (KIA) has used the combined approach with 84 consecutive patients. Radical resection was achieved in 66 patients, subtotal in 11, and partial in 7. There were no perioperative complications. Six patients experienced postoperative transient diabetes insipidus. The pituitary gland and stalk were preserved in all cases. Visual symptoms were improved in 78% and endocrinological symptoms in 56% of cases. CONCLUSION This combined approach is safe and effective. It increases the efficacy and radicality of surgical resection, helps to preserve the pituitary gland, and improves and resolves preoperatively altered patient hormonal function and impaired vision. It also reduces complications, provides less postoperative pain and discomfort, reduces the surgery time, and enables a shorter hospital-stay.

Introduction. Asthma and obesity are the most common chronic health disorders in children. Although heredity plays a significant role in their development, environmental factors and early exposure have contributed to the increasing incidence of both disorders in recent decades. The aim of the study was to estimate asthma prevalence in schoolchildren in Indjija, Srem District, Serbia, and to investigate differences in nutritional status of children with asthma as well as differences between their nutritional status and prescribed asthma medications. Material and Methods. A cross-sectional retrospective cohort study was conducted at the Primary Health Center in Indjija. Of all the medical records of children aged 6 - 14 years, a cohort of children with asthma was formed. The retrospective study evaluated their nutritional status and the prescribed asthma medications. Results. The prevalence of asthma in children aged 6 - 14 was 6.9%. Children with asthma were significantly more overweight and obese (40.5%) than children without asthma. Boys accounted for 63.7% of children with asthma, with a statistically significant gender difference. Abnormal nutritional status was found in 44.3% of children with asthma and boys with asthma were significantly more obese (23%) compared to girls (7.8%). Overweight and obese children with asthma were not prescribed significantly more medications to relieve asthma symptoms than normal-weight children. Conclusion. The prevalence of asthma among schoolchildren in Indjija was 6.9%. Children with asthma were more likely to be overweight and obese than children without asthma, whereas boys with asthma were significantly more obese than girls. No significant differences were found between their nutritional status and prescribed asthma medications.

The aim of this paper is to analyze the relationship between the Fund for Social Security of Military Insurers and the Republic Health Insurance Fund through the aspect of more efficient use of health insurance funds. Analyzing this relationship, the system of health care in the Republic of Serbia and the health insurance system are essentially considered. Taking into account the specifics of the social protection of military insurers, efforts are being made to find out the direction and improvement of relations with the civilian health care system. Only the proactive relationship between the military and the civilian health system and the health insurance system is a condition of better health care for the insured of both funds, as well as more efficient use of health insurance funds. Health protection of the population is one of the most important social priorities and as such it must be given special attention. The right of the individual to health care, but also to other forms of protection, is realized within the framework of social insurance. Health care, and therefore the health insurance system of military insureds, developed in accordance with the specifics related to the military system itself. Fully respecting the autonomy of the said system, the development of insurance in this area evolved along with changes in the prevailing civilian health insurance system. The system of health care and health insurance is one of the most important systems in each country. The efficiency and cost-effectiveness of the functioning of this system is a challenge for every national economy. The goal that needs to be achieved is to achieve the best health care of the nation by means of available health insurance. The system of compulsory health insurance in the Republic of Serbia is implemented through a unique state organization - the Republic Health Insurance Fund. When it comes to health insurance and the protection of civil and military insurers, it is clear that these are two completely separate and independent systems that have a lot of common points and whose mutual cooperation and shared use of resources should lead to positive effects as a whole. The financial aspect, which is especially reflected through the health insurance system, is one of the most important factors because it directly affects the scope and quality of the entire health care system. Considering and analyzing the complexity of the mutual relations between the civilian and military health and social security systems, and consequently the health care system, some of the possible proposals have emerged for improvement of one of the most important aspects of every society - the health of the nation.

As a consequence of the measures taken to remedy the medical problem, there may be a bigger one economically, all over the world. The paper analyzes the consequences of the current economic crisis caused by the COVID-19 virus pandemic. The key economic consequences of the pandemic for companies but also for the economy have been identified. Entrepreneurs, small and medium enterprises, with the smallest liquidity stocks, are expected to feel the greatest consequences of the economic crisis. Taught by the failures of the Great Depression and the relative successes of the crisis in 2008, governments have already announced and launched massive programs to help businesses. At this moment, the supply of liquidity of deficient economic entities is a critical issue. The previous crisis showed that governments have tried and tested mechanisms for supplying liquidity to the financial sector, but transmission mechanisms to end-users were the Achilles' heel of the mechanism. We believe that success in finding adequate channels for the transfer of liquidity to economic entities with a liquidity deficit will be crucial for the character, length, and depth of the crisis. The paper offers a number of proposals for key necessary measures at the state level to overcome the observed economic disruptions. One of them is the request of the regulator, the other is the reaction of the state, but an important part must also come from the company. In addition, the research conducted by the questionnaire method for joint-stock companies from the Western Balkans resulted in a set of measures that serve as a basis for determining the gap in the required and current set of measures taken at the level of an individual organization.The aim of this paper is to point out that in the short term it is possible to stabilize the system through the application of macroeconomic and microeconomic measures.