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Aims:  This study aimed to investigate persistent symptoms of coronavirus disease 2019 (COVID-19) patients admitted to a general tertiary teaching hospital during a 9-month follow-up period.
Materials & Methods: In this study, 400 hospitalized COVID-19 patients in Iran were studied, among them 78 RT-qPCR positive cases were identified from February 19 to March 18, 2020. After excluding readmitted and deceased patients, 75 cases underwent in-hospital follow-up. Out-of-hospital follow-up was done for 57 living patients, of whom four cases were unreachable, and five cases died after discharge. The remaining 48 participants were followed up for nine months, and their symptoms and complaints were checked by regular visits to the infectious disease clinic and telephone calls via a checklist designed by the authors.
Findings: The mean age of RT-qPCR positive hospitalized patients was 54.64 ± 17.42 years, and 38.7% of them were female. Overall, five (10.4%) patients complained of dyspnea, three (6.2%) patients of olfactory nerve complications, three (6.2%) patients of persistent fatigue, and two (4.2%) patients of prolonged cough up to the end of the follow-up period. New-onset symptoms were reported in five (10.4%) patients; in most of them (4 out of 5), these symptoms were neurological (urinary retention, tremor with ataxia, distraction, and insomnia).
Conclusion: A large proportion of patients who recover from COVID-19 infection experience prolonged symptoms. Further investigations should be done to provid more data on the underlying causes and risk factors of developing these post-COVID conditions.

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Abstract
Among the various active packaging technologies, antimicrobial packaging has been the focus of more recent research. This study aimed to investigate the antimicrobial and antioxidant properties of polypropylene films coated with myrtle and rosemary extract on mayonnaise. Extracts of myrtle and rosemary at 0, 0.1, 0.15 and 0.2% levels were used to cover polypropylene films. Chemical properties of mayonnaise (pH, acidity, peroxide value), Antimicrobial properties against Escherichia coli and Staphylococcus aureus and Candida albicans alone and in the presence of mayonnaise, Sensory properties (Smell, taste, color, overall acceptability) were assessed for 21 days at 7-day intervals at 4 °C. The results showed that with time the rate of change of pH decreased and the acidity increased and in all treatments pH (less than 4.1) and acidity (0.69 - 0.72%) changes were in standard range for 21 days. The peroxide value of mayonnaise stored in polypropylene films was significantly reduced compared to the control. Polypropylene films containing rosemary extract had more antimicrobial activity than myrtle extract. The number of microorganisms control treatment increased with time the number of microorganisms of mayonnaise decreased in the presence of polypropylene films containing myrtle and rosemary extract (p <0.05). Myrtle and rosemary extract increased the overall acceptability of mayonnaise compared to the control by improving smell and taste. Coating of 0.15% rosemary extract with polypropylene films was the best treatment for increasing the shelf life of mayonnaise.
 

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Introduction: Corona damage a wide range of organs and their functions So, the purpose of this study is to compare the function of kidneys and livers in COVID-19-infected people and people who were in the recovery phase after about five months from the onset of the infection.
Methods: This study was carried out in Samarra General Hospital (COVID-19 epidemic center) in Salahuddin province Iraq from the 1st of January 2022 till the end of December 2022. In The case-control study 100 subjects (men and women 20-80 years), 40 adult people as control with negative RT-PCR or CT-Scan for COVID-19 and no apparent chronic diseases, and 60 subjects (n=30). The blood urea, creatinine as markers of kidney function, ALT, AST, alkaline phosphatase, and C-reactive protein as markers of liver function by special kits were assessed.
Results: In COVID-19-infected subjects and in subjects in the recovery stage, the markers of kidney function, blood urea, and creatinine increased significantly (p<0.001), and in this regard, no difference was seen between the two genders. Similarly, the evaluation of compounds related to liver function, including ALT, AST, alkaline phosphatase, and C-reactive protein, was significantly higher in both affected and recovering patients (p<0.001) compared to healthy individuals. In this case, there was no difference between the two genders.
Conclusion: It seems that not only in COVID-19-infected subjects but also in subjects who have recovered from corona, in both men and women, there are relatively permanent failures in the function of kidneys and liver.