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Socio-Demographical Profile of 7285 Sars-Cov-2 Positive Early Cases; Comparison With National Four Epidemic Waves Publisher



Azhar IR1, 2 ; Yaghoobi M1 ; Ghalich L3 ; Masoudian Z4 ; Pirsaraei AS1 ; Yaghoobi P1 ; Hamednaghsheh M1 ; Zadeh AMR1 ; Ghafari P1, 2 ; Soltani S1 ; Bozorgmehr S1 ; Shafiei M1, 2 ; Mortazavi SE1, 2 ; Ghaziasadi A2 Show All Authors
Authors
  1. Azhar IR1, 2
  2. Yaghoobi M1
  3. Ghalich L3
  4. Masoudian Z4
  5. Pirsaraei AS1
  6. Yaghoobi P1
  7. Hamednaghsheh M1
  8. Zadeh AMR1
  9. Ghafari P1, 2
  10. Soltani S1
  11. Bozorgmehr S1
  12. Shafiei M1, 2
  13. Mortazavi SE1, 2
  14. Ghaziasadi A2
  15. Sharafkhanian B1
  16. Akhiani H1
  17. Javidnejad J1
  18. Nomanpour B1, 5
  19. Araeynejad F1
  20. Jazayeri SM1, 2
Show Affiliations
Authors Affiliations
  1. 1. Aramesh Medical Laboratory, Tehran, Iran
  2. 2. Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Mental Health Research Center, Psychosocial Health Research Institute, Iran University of Medical Science, Tehran, Iran
  4. 4. Department of Microbiology, College of Science, Islamic Azad University of Karaj, Karaj, Iran
  5. 5. Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran

Source: Medical Journal of the Islamic Republic of Iran Published:2022


Abstract

Background: Objectives were to investigate aspects of the COVID-19 epidemics via testing the individuals who were referred to Aramesh Medical Laboratory in Tehran and to integrate the molecular results with epidemiological data since the beginning of the epidemic. Methods: In this cross-sectional Study 77528 outpatients were referred to Aramesh Medical laboratory by physicians for the diagnosis of SARS-CoV-2 infection between March 2019 and May 2021. Viral acid nucleic extracted from nasal and throat specimens and subsequently amplified using Reverse Transcriptase Real-Time PCR. Laboratory data including Ct values compared with epidemic peaks of COVID-19 countrywide. Statistical Analysis was done by SPSS 21 Software. Results: 14312 (18.46%) tested positive.36.5% of the positive cases were in the 30 to 39 years old age group. The positive result rate was significantly different based on months, ranging from 6% to 28%, compatible with four recognized epidemic peaks encompassing the end of March through the first week of April (first epidemic peak), from June to July 2020 (second epidemic peak), October until mid of November 2020 (third epidemic wave) followed by the end of April to May 2021 (until the end period of study, in the middle of 4th peak). In 37.8% of cases, the Ct value was between 21 and 28. Two separate trends were seen for Ct ≤ 25 and Ct ≤ 20 for the first and fourth epidemic peaks, respectively. There was an association between the number of total monthly positive results and total deaths in the country, especially with the second to third peaks (in the course of summer 2020) and fourth epidemic peak. Conclusion: It might be useful to consider laboratory admission rates as an indicator for changes in the epidemic level in the country to continue the SARS-CoV-2 surveillance in accordance with public decision-makers. © Iran University of Medical Sciences
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