On December 31, 2019, pneumonia due to the severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2, formerly known as 2019-nCoV) appeared to Wuhan, China, and COVID-19 is an infectious disease caused by SARS. CoV-2. SARS-CoV-2 is a new strain of coronavirus that has not been previously identified in humans. Until April 18, 2020, 2275783 were confirmed and 156104 deaths worldwide reported. This paper presents an overview of the findings that scientists have realized so far. In this study articles indexed in Embase, Elsevier, PubMed, Google Scholar and using keywords SARS-CoV-2, COVID-19, Coronavirus 2019 and nCoV-2019 were used. The World Health Organization and the Centers for Disease Control and Prevention used the world's most reputable websites to obtain the latest COVID-19 disease statistics. In the initial search, 500 articles were extracted and 55 articles were selected after duplication and evaluation of title and abstract. The results show that the mortality rate of the virus in the elderly and people with underlying diseases is significantly higher than in the healthy ones. High-risk groups for the disease include cardiovascular disease, diabetes, chronic respiratory disease, and hypertension, respectively. The novel coronavirus pandemic is more widespread in humans compared to previous coronaviruses, which indicates the extremely high prevalence of the virus. No vaccine or cure has been found for the virus so far, but supportive treatments and early diagnosis are effective in the treatment process, and there are many treatments around the world for the treatment of COVID-19.

For a century, two new viruses per year have spilled from their natural hosts into humans. The MERS, SARS, and 2009 H1N1 epidemics, and the HIV and coronavirus disease 2019 (COVID-19) pandemics, testify to their damage. Zoonotic viruses infect people directly most often when they handle live primates, bats, and other wildlife (or their meat) or indirectly from farm ani-mals such as chickens and pigs. The risks are higher than ever. Here, we assess the cost of monitoring and preventing disease spillover driven by the unprecedented loss and fragmentation of tropical forests and by the burgeoning wildlife trade. Currently, we invest relatively little toward preventing deforestation and regulating wildlife trade, despite well-researched plans that demonstrate a high return on their investment in limiting zoo-noses and conferring many other benefits.

Introduction: The growing increase in the elderly population requires more research to identify the health priorities of this group, especially in critical situations such as the COVID-19 pandemic. Therefore, the current study was conducted to determine the influential components of marital satisfaction and its relationship with lifestyle in Urmia City in 2021. Methods: In this descriptive-analytical and cross-sectional correlational study, 220 married elderly living in Urmia were selected through cluster sampling. The Miler's life satisfaction and Haynes's marital satisfaction questionnaires were used in addition to the demographic questionnaire to collect data in this research. Data were analyzed using descriptive statistical tests (mean and standard deviation, frequency, and percentage) and analytical (Pearson correlation coefficients and multiple linear regression) at a significant level of P ≤ 0.05. Results: A step-by-step multiple linear regression model also revealed that variables of lifestyle (ß = -0.364), age (ß = 0.425), number of children (ß = 0.143), occupation (ß = 0.425) and illness (ß = 3.608) - had the most considerable contribution in the sensitive prediction of marital satisfaction. The regression model excluded other demographic variables. Conclusions: This study showed that lifestyle and demographic variables such as age, number of children, occupation, and illness have the greatest contribution in predicting marital satisfaction. Therefore, it seems necessary to design counseling services in comprehensive health centers for this group so that counselors can teach healthy lifestyles to older adults to improve marital relationships.

Background: Guillain-Barré,Syndrome (GBS) is an autoimmune disease that may occur after infections. As Coronavirus Disease 2019 (COVID-19) may bring about GBS, it is important to assess the effect of the COVID-19 pandemic on this disease Objectives: This study aimed to compare the distribution and characteristics of GBS during and before the COVID-19 pandemic in an academic referral hospital in the north of Iran. Materials & Methods: This retrospective study assessed GBS distribution and characteristics during the COVID-19 pandemic period (from March 2020 to the end of February 2021) and before the pandemic (from March 2019 to the end of February 2020) on 5340 patients referred to the Neurology Ward of Poursina Hospital of Guilan Province, in Iran. Results: There was no significant difference between GBS distribution during (0. 03%) and before (0. 04%) the COVID-19 pandemic (P=0. 413). There were also no differences between the two periods regarding the gender (P=0. 659) and age (P=0. 417) of the patients. The most common subtype of GBS during the COVID-19 pandemic was Acute Motor and Sensory Axonal Neuropathy (AMSAN) (71. 4%). In both periods, the most common type of treatment was intravenous administration of immune globulin. There was no significant difference between the two periods (P=0. 838) regarding the patients’,treatment response. Conclusion: The distribution of GBS, its subtypes, type of treatment, and response to treatment were not different between the two study periods.