Sina Dobaradaran, Sahar Geravandi, Gholamreza Goudarzi, Esmaile Idani, Shokrollah Salmanzadeh, Farhad Soltani, Ahmad Reza Yari, Mohammad Javad Mohammadi,
Volume 26, Issue 139 (8-2016)
Abstract
Background and purpose: Particulate matter less than 10 microns (PM10) is one of the main pollutants that cause irreparable damage to the environment and human health. The aim of this study was to estimate the health effects of PM10 on human health.
Materials and methods: This analytic study was conducted in Bushehr, 2013. PM10 data were obtained from Bushehr Meteorological organization and Department of environment. PM10 concentration was measured by GRIMM. Raw data processing was done in Excel (instruction set correction of averaging and coding), then the impact of meterological parameters was considered and the data was converted into the Air Q model.
Results: The results showed that the annual average concentrations of PM10 in Bushehr was 251.35 µg/m3. Total number of cardiovascular diseases attributed to PM10 was 130 cases. The total cumulative number of respiratory diseases in a year was 346. 52 of which 52% were attributed to PM10 concentration less than 150 µg/m3. In areas studied per 10 µg/m3 increased concentrations of PM10, the risks of cardiovascular death and respiratory deaths increased by1.8% and 2.1%, respectively.
Conclusion: High rates of these two diseases could be due to higher average PM10 or continued days of high PM10 concentration in Bushehr.
Mahmood Moosazadeh, Mohsen Arabi, Asghar Nezammahalleh, Pejman Khosravi, Tahoora Moosavi,
Volume 34, Issue 233 (5-2024)
Abstract
Background and purpose: In December 2019, a series of pneumonia cases of unknown origin were reported in Wuhan, China, named by the World Health Organization as COVID-19. The risk factors for developing the disease of COVID-19 are still not well known, but evidence shows that some factors, including respiratory diseases such as tuberculosis, are important risk factors in the disease of COVID-19. It should be noted that tuberculosis, like SARS-COV-2, is mainly transmitted through breathing and affects the lungs. Also, some studies show that infection with Mycobacterium tuberculosis causes more rapid and severe pneumonia symptoms in COVID-19 and is the main cause of death due to severe disease. Considering that the disease of COVID-19 is a newly emerging pandemic and the risk factors related to its incidence and severity are still being investigated and considering that tuberculosis is a curable infectious disease that can affect other respiratory diseases. This study was conducted to investigate the probable and definite frequency of COVID-19 (COVID-19) in the first and second peaks of the coronavirus pandemic among patients with a history of tuberculosis.
Materials and methods: This study was descriptive-cross-sectional and the study population included patients with a history of tuberculosis whose diagnosis date was between 2015 and 2020. The number of these samples was equal to 1532. The sampling method was census. The time of investigation in terms of contracting COVID-19 was after the first peak and during and after the second peak of Corona (from the second half of May 2019 to November 2019). The data collection tool included a checklist containing demographic variables and clinical symptoms related to COVID-19. The method of collecting information was in the form of telephone interviews and document review. Data collection was done by trained interviewers. For this purpose, the questioners were first given the necessary training on how to complete the checklist. Data entry was done in Excel software and transferred to SPSS V.16 software for analysis. The description of the variables is presented in terms of number, percentage, mean, standard deviation, and median. A chi-square test was conducted to compare the grouped variables.
Results: In this study, the prevalence of probable and definite cases of COVID-19 among patients with a history of tuberculosis was reported as 5.5% (85 people), and suspected, probable and definite cases were reported as 15.6% (239 people). Also, there was no correlation between age groups, gender, place of residence, type of tuberculosis, marriage, diabetes, kidney disease dialysis, immunodeficiency,, and liver disease with the prevalence of COVID-19 among patients with a history of tuberculosis. It should be noted that in this group of patients, heart disease, lung disease, cancer, chemotherapy, high blood pressure, and brain and nerve diseases were related to the spread of COVID-19. Also, the highest frequency of suspected, probable, and definite COVID among patients with a history of tuberculosis was diagnosed respectively in 2019 with 38.5% (25 out of 65 cases with a history of tuberculosis), in 2014 with 26.7% (63 out of 236 cases with a history of tuberculosis) and 20.8% (58 people out of 279 cases with a history of tuberculosis) in 2018.
Conclusion: Due to the significant difference in the prevalence of Covid 19 in patients who have not received the flu vaccine, it is necessary to inject the flu vaccine in these patients. Advice to quit smoking in these patients should be a priority. Because no independent study on Covid disease was observed in patients with tuberculosis, further studies in this field are necessary.
