T. Zhang, Q. Wu, and Z. Zhang, "Probable Pangolin Origin of SARS-CoV-2 Associated with the COVID-19 Outbreak," Current Biology, vol. 30, pp. 1346-1351.e2, 2020/04/06/ 2020.
 S. Ali, T. Hama-Soor, M. Babakir-Mina, S. Dimonte, and F. Greco, "Is It Scaly Anteater or Bat A Real Origin of The 2019-Novel CoV: A Probable Hypothesis? ," Kurdistan Journal of Applied Research, vol. 5, pp. 1-12, 2020.
 WHO, "Coronavirus Diseases 2019 (COVID-19)- Situation Report-22," WHO11- February 2020.
 WHO, "Coronavirus diseases 2019 (COVID-19)- Situation Report-52," Report12-March 2020.
 CDC. (2020). Human Coronavirus. Available: https://www.cdc.gov/coronavirus/types.html
 T. Chen, D. Wu, H. Chen, W. Yan, D. Yang, G. Chen, X. Luo, J. Zhao, and Q. Ning, "Clinical characteristics of 113 deceased patients with coronavirus disease 2019: retrospective study," BMJ, vol. 368, p. m1091, 2020.
 T. Zhen-Dong, T. An, L. Ke-Feng, L. Peng, W. Hong-Ling, Y. Jing-Ping, Z. Yong-Li, and Y. Jian-Bo, "Potential Presymptomatic Transmission of SARS-CoV-2, Zhejiang Province, China, 2020," Emerging Infectious Disease journal, vol. 26, 2020.
 C. P. Davis. (2020, 30 April). COVID-19 (Coronavirus, 2019-nCoV). Available: https://www.medicinenet.com/wuhan_coronavirus_2019-ncov/article.htm
 Q. Li, X. Guan, P. Wu, X. Wang, L. Zhou, Y. Tong, R. Ren, K. S. M. Leung, E. H. Y. Lau, J. Y. Wong, X. Xing, N. Xiang, Y. Wu, B. J. Cowling, B. Yang, G. M. Leung, and Z. Feng, "Early Transmission Dynamics in Wuhan, China, of Novel Coronavirus–Infected Pneumonia," New England Journal of Medicine, vol. 382, pp. 1199-1207, 2020.
 C. Jing, S. Wenjie, H. Jianping, G. Michelle, W. Jing, and H. Guiqing, "Indirect Virus Transmission in Cluster of COVID-19 Cases, Wenzhou, China, 2020," Emerging Infectious Disease journal, vol. 26, 2020.
 M. krg, "Coronavirus 2019- Situation Update," Ministry of Health, https://gov.krd/coronavirus-en/situation-update/29 April 2020.
 D. Zhanwei, W. Lin, C. Simon, X. Xiaoke, W. Xianwen, J. C. Benjamin, and M. Lauren Ancel, "Risk for Transportation of 2019 Novel Coronavirus Disease from Wuhan to Other Cities in China," Emerging Infectious Disease journal, vol. 26, 2020.
 G. Kampf, D. Todt, S. Pfaender, and E. Steinmann, "Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents," Journal of Hospital Infection, vol. 104, pp. 246-251, 2020.
 N. van Doremalen, T. Bushmaker, D. Morris, M. Holbrook, A. Gamble, B. Williamson, A. Tamin, J. Harcourt, N. Thornburg, S. Gerber, J. Lloyd-Smith, E. de Wit, and V. Munster, "Aerosol and surface stability of HCoV-19 (SARS-CoV-2) compared to SARS-CoV-1," medRxiv, p. 2020.03.09.20033217, 2020.
 Y. Liu, Z. Ning, Y. Chen, M. Guo, Y. Liu, N. K. Gali, L. Sun, Y. Duan, J. Cai, D. Westerdahl, X. Liu, K.-f. Ho, H. Kan, Q. Fu, and K. Lan, "Aerodynamic Characteristics and RNA Concentration of SARS-CoV-2 Aerosol in Wuhan Hospitals during COVID-19 Outbreak," bioRxiv, p. 2020.03.08.982637, 2020.
 CDC, "Coronavirus Disease 2019 (COVID-19)," U.S. Centers for Disease Control and Prevention, https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/symptoms.html17-April 2020.
 B. Udugama, P. Kadhiresan, H. N. Kozlowski, A. Malekjahani, M. Osborne, V. Y. C. Li, H. Chen, S. Mubareka, J. B. Gubbay, and W. C. W. Chan, "Diagnosing COVID-19: The Disease and Tools for Detection," ACS nano, vol. 14, pp. 3822-3835, 2020.
 NCIRD, "Division of Viral Diseases," National Center for Immunization and Respiratory Diseases27 April 2020.
 BD. (2020, 03 April 2020). COVID-19 IgM/IgG Rapid test. Available: https://www.biomedomics.com/products/infectious-disease/covid-19-rt/
 T. Ai, Z. Yang, H. Hou, C. Zhan, C. Chen, W. Lv, Q. Tao, Z. Sun, and L. Xia, "Correlation of Chest CT and RT-PCR Testing in Coronavirus Disease 2019 (COVID-19) in China: A Report of 1014 Cases," Radiology, vol. 0, p. 200642.
 R. Patanavanich and S. A. Glantz, "Smoking is Associated with COVID-19 Progression: A Meta-Analysis," medRxiv, p. 2020.04.13.20063669, 2020.
 J. Lighter, M. Phillips, S. Hochman, S. Sterling, D. Johnson, F. Francois, and A. Stachel, "Obesity in patients younger than 60 years is a risk factor for Covid-19 hospital admission," Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, p. ciaa415, 2020.
 W. Liang, W. Guan, R. Chen, W. Wang, J. Li, K. Xu, C. Li, Q. Ai, W. Lu, H. Liang, S. Li, and J. He, "Cancer patients in SARS-CoV-2 infection: a nationwide analysis in China," The Lancet. Oncology, vol. 21, pp. 335-337, 2020.
 WHO, "Coronavirus Disease 2019 (COVID-19)," World Health Organisation https://www.who.int/news-room/q-a-detail/q-a-coronaviruses29 April 2020.
 B. N. Williamson, F. Feldmann, B. Schwarz, K. Meade-White, D. P. Porter, J. Schulz, N. v. Doremalen, I. Leighton, C. K. Yinda, L. Pérez-Pérez, A. Okumura, J. Lovaglio, P. W. Hanley, G. Saturday, C. M. Bosio, S. Anzick, K. Barbian, T. Cihlar, C. Martens, D. P. Scott, V. J. Munster, and E. d. Wit, "Clinical benefit of remdesivir in rhesus macaques infected with SARS-CoV-2," bioRxiv, p. 2020.04.15.043166, 2020.
 P. Gautret, J.-C. Lagier, P. Parola, V. T. Hoang, L. Meddeb, M. Mailhe, B. Doudier, J. Courjon, V. Giordanengo, V. E. Vieira, H. T. Dupont, S. Honoré, P. Colson, E. Chabrière, B. La Scola, J.-M. Rolain, P. Brouqui, and D. Raoult, "Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial," International Journal of Antimicrobial Agents, p. 105949, 2020/03/20/ 2020.
 NIH, "Coronavirus Disease (COVID-19) treatment guidline " National Institute of Health, https://covid19treatmentguidelines.nih.gov/29 April 2020.
 E. Mahase, "Covid-19: What do we know so far about a vaccine?," BMJ, vol. 369, p. m1679, 2020.
 K. Duan, B. Liu, C. Li, H. Zhang, T. Yu, J. Qu, M. Zhou, L. Chen, S. Meng, Y. Hu, C. Peng, M. Yuan, J. Huang, Z. Wang, J. Yu, X. Gao, D. Yu, J. Hou, Z. Shi, S. Chen, Z. Chen, X.-x. Zhang, and X. Yang, "The feasibility of convalescent plasma therapy in severe COVID-19 patients: a pilot study," medRxiv, p. 2020.03.16.20036145, 2020.
 D. Chen, W. Xu, Z. Lei, Z. Huang, J. Liu, Z. Gao, and L. Peng, "Recurrence of positive SARS-CoV-2 RNA in COVID-19: A case report," International Journal of Infectious Diseases, vol. 93, pp. 297-299, 2020/04/01/ 2020.