[Click here for Part II]

We are currently living in a pandemic. As of November 1, 2020, COVID-19 has spread across 215 countries, infected over 45.9 million people, and claimed the lives of at least 1.19 million people. While COVID-19 testing has become more available across the country, information on how testing and diagnosis works has not been made easily accessible to the public. This video series aims to give a brief background on COVID-19, and discuss how COVID-19 is tested for and diagnosed, milestones in testing development, and the scientific and societal significance of these tests.

In Part 1 of this series (i.e., this video), we discuss basic facts about the coronavirus such as its genetic material, how it is transmitted, and the symptoms of the disease. We then delve deeper into PCR tests; more specifically, how coronavirus is diagnosed through the PCR tests, its advantages and disadvantages.

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  • Binnicker, M. J. (2020). Emergence of a novel coronavirus disease (COVID-19) and the importance of diagnostic testing: why partnership between clinical laboratories, public health agencies, and industry is essential to control the outbreak. Clinical Chemistry, 66( 5), 664-666.
  • Cousins, B. (2020, September 22). Emergency physicians worry combination of COVID-19 and flu season will overwhelm system. CTV News.
  • Davidson, S. (2020, October 25). Ontario records more than 1,000 new COVID-19 cases for the first time ever. CTV News.
  • Government of Canada. (2020, October 10). Coronavirus disease (COVID-19): For health professionals.
  • Government of Ontario. (2020). COVID-19 test and testing location information. COVID-19.
  • Ireland, N. (2020, September 3). Getting a flu shot during the COVID-19 era: Here's whatyouneedtoknow. CBCNews.
  • Johns Hopkins University. (2020). COVID-19 Map. [ Interactive map with data].
  •  Kubina, R., & Dziedzic, A. (2020). Molecular and Serological Tests for COVID-19 a Comparative Review of SARS-CoV-2 Coronavirus Laboratory and Point-of-Care Diagnostics. Diagnostics, 10( 6), 434.
  • Li, X., Geng, M., Peng, Y., Meng, L., & Lu, S. (2020). Molecular immune pathogenesis and diagnosis of COVID-19. Journal of Pharmaceutical Analysis.
  • Lippi, G., & Plebani, M. (2020). The critical role of laboratory medicine during coronavirus disease 2019 (COVID-19) and other viral outbreaks. Clinical Chemistry and Laboratory Medicine (CCLM), 1
  • Marshall, W.F. (2020, August 19). How do COVID-19 antibody tests differ from diagnostic tests? Mayo Clinic.
  • Patel, R., Babady, E., Theel, E. S., Storch, G. A., Pinsky, B. A., George, K. S., ... & Bertuzzi, S. (2020). Report from the American Society for Microbiology COVID-19 international summit, 23 march 2020: value of diagnostic testing for SARS–CoV-2/COVID-19.
  • Public Health Ontario. (2020). Coronavirus Disease 2019 (COVID-19) – PCR.
  • Public Health Ontario. (2020). The Story of COVID-19 Testing in Ontario.
  • Public Health Ontario. (2020, July 29). COVID-19 Serosurveillance. a-surveillance/covid-19-serosurveillance
  • Public Health Ontario. (2020, June 14). COVID-19 Laboratory Testing in Ontario. atory-diseases/novel-coronavirus/lab-testing-ontario
  • Singanayagam, A., Patel, M., Charlett, A., Bernal, J. L., Saliba, V., Ellis, J., ... & Gopal, R. (2020). Duration of infectiousness and correlation with RT-PCR cycle threshold valuesincasesof COVID-19, England,JanuarytoMay2020.Eurosurveillance, 25(32), 2001483.
  • Surkova, E., Nikolayevskyy, V., & Drobniewski, F. (2020). False-positive COVID-19 results: hidden problems and costs. The Lancet Respiratory Medicine.
  • Tang, Y. W., Schmitz, J. E., Persing, D. H., & Stratton, C. W. (2020). Laboratory diagnosis of COVID-19: current issues and challenges. Journal of clinical microbiology, 58( 6).
  • Wang, Y., Kang, H., Liu, X., & Tong, Z. (2020). Combination of RT-qPCR testing and clinical features for diagnosis of COVID-19 facilitates management of SARS-CoV-2 outbreak. Journal of medical virology, 92(6), 538-539.
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