Epidemiology of COVID-19

It seems that coronaviruses take an important place in the 21th century history. Five of seven human coronavirus was isolated in this century. Unfortunately, last three of them entered our life with a fear of outbreak, pandemic or death. Last human coronavirus which emerged world from Wuhan China, SARS CoV-2 and its clinical expression, Coronavirus disease COVID-19 recently taken a significant place in our daily practice. Initial reports showed that, its origin was bats. It transmitted human to human by droplet and contact routes, but some doubt about airborne, fecal or intrauterine transmission also should be removed. Its R0 value is 2.3 but it could be as high as 5.7. Its case fatality rate was 6.3, but it was different in different ages and counties, and it could be over 15%. According to early models total 10-12 weeks is required to control an outbreak in the community. While different countries show different daily case numbers, total number of case, case mortality rates or R0, it seems they show a similar epidemic curve. Every day we learn new data about the current outbreak. Since the outbreak is not over yet, every detail should be evaluated carefully and the updates should be followed closely to monitor the epidemiological properties of COVID-19.

Keywords:

SARS CoV-2, COVID-19, epidemiology case fatality rate, transmission,

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1. Fung TS, Liu DX. Human coronavirus: host-pathogen interaction. Annual Review of Microbiology 2019; 73: 529-557. doi: 10.1146/annurev-micro-020518-115759
2. Cui, J., Li, F. & Shi, Z. Origin and evolution of pathogenic coronaviruses. Nature Reviews Microbiology 2019; 17 (3): 181- 192. doi: 10.1038/s41579-018-0118-9
3. Yu P, Hu B, Shi ZL, Cui J. Geographical structure of bat SARSrelated coronaviruses. Infection Genetic and Evolution 2019; 69: 224-229. doi: 10.1016/j.meegid.2019.02.001
4. Zhou P, Yang XL, Wang XG, Hu B, Zhang L et al. A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature 2020; 579 (7798): 270-273. doi: 10.1038/s41586- 020-2012-7
5. Li Q, Guan X, Wu P, Wang W, Zhou L et al. Early transmission dynamics in Wuhan, China, of novel coronavirus-infected pneumonia. The New England Journal of Medicine 2020; 382 (13): 1199-1207. doi:10.1056/NEJMoa2001316
6. Guan WJ, Ni ZY, Hu Y, Liang WH, Ou CQ et al. Clinical Characteristics of Coronavirus Disease 2019 in China. The New England Journal of Medicine 2020; NEJMoa2002032. doi: 10.1056/NEJMoa2002032 7. Lauer SA, Grantz KH, Bi Q, Jones FK, Zheng Q et al. The incubation period of coronavirus disease 2019 (COVID-19) from publicly reported confirmed cases: estimation and application. Annals of Internal Medicine 2020; March 10. doi: 10.7326/M20-0504
8. Jiang X, Rayner S, Luo MH. Does SARS-CoV-2 has a longer incubation period than SARS and MERS? Journal of Medical Virology 2020; 92 (5): 476-478. doi: 10.1002/jmv.25708
9. Wu Z, McGoogan JM. Characteristics of and important lessons from the coronavirus disease 2019 (COVID-19) outbreak in China: summary of a report of 72 314 Cases from the Chinese Center for Disease Control and Prevention. JAMA 2020; 323 (13): 1239-1242. doi: 10.1001/jama.2020.2648
10. Fang F, Zhao D, Chen Y et al. Recommendations for the diagnosis, prevention and control of the 2019 novel coronavirus infection in children (first interim edition). Chinese Journal of Pediatrics 2020; 58 (3): 169-174 (in Chinese). doi: 10.3760/cm a.j.issn.0578-1310.2020.03.001
11. Dong Y, Mo X, Hu Y, Qi X, Jiang F et al. Epidemiology of COVID-19 among children in China. Pediatrics 2020; 145 (4): e20200702. doi: 10.1542/peds.2020-0702
12. Shen, K., Yang, Y., Wang, T. Zhao D, Jiang Y et al. Diagnosis, treatment, and prevention of 2019 novel coronavirus infection in children: experts’ consensus statement. World Journal of Pediatrics 2020. doi: 10.1007/s12519-020-00343-7
13. Kam KQ, Yung CF, Cui L, Pin RLZ, Mak TM et al. A Well Infant With Coronavirus Disease 2019 With High Viral Load. Clinical Infectious Diseases 2020: Feb 28; ciaa201. doi: 10.1093/cid/ciaa201
14. Hu Z, Song C, Xu C, Jin G, Chen Y et al. Clinical characteristics of 24 asymptomatic infections with COVID-19 screened among close contacts in Nanjing, China. Science China Life Sciences 2020; March 4. doi: 10.1007/s11427-020-1661-4
15. Zhang J, Tian S, Lou J, Chen Y. Familial cluster of COVID-19 infection from an asymptomatic. Critical Care 2020; 24 (1): 119. doi: 10.1186/s13054-020-2817-7
16. Tian SJ, Hu N, Lou J, Chen K, Kang X et al. Characteristics of COVID-19 infection in Beijing. The Journal Infection 2020; 80 (4): 401-406. doi: 10.1016/j.jinf.2020.02.018
17. Mizumoto K, Kagaya K, Zarebski A, Chowell G. Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. Euro Surveillance 2020; 25 (10): 2000180. doi: 10.2807/1560-7917.ES.2020.25.10.2000180
18. World Health Organization (2020). Modes of transmission of virus causing COVID-19: implications for IPC precaution recommendations [online]. Website https://www.who.int/ news-room/commentaries/detail/modes-of-transmissionof-virus-causing-covid-19-implications-for-ipc-precautionrecommendations [accessed 14 April 2020].
19. van Doremalen N, Bushmaker T, Morris DH et al. Aerosol and surface stability of SARS-CoV-2 as compared with SARSCoV-1. The New England Journal of Medicine 2020; 382 (16): 1564-1567. doi: 10.1056/NEJMc2004973
20. Guo ZD, Wang ZY, Zhang SF, Li X, Li L et al. Aerosol and surface distribution of severe acute respiratory syndrome coronavirus 2 in hospital wards, Wuhan, China, 2020. Emerging Infectious Diseases 2020; 26 (7) [Epub ahead of print]. doi: 10.3201/ eid2607.200885
21. Cheng VCC, Wong SC, Chen JHK, Yip CCY, Chuang VWM et al. Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong . Infection Control and Hospital Epidemiology 2020; March 5, [Epub ahead of print]. doi:10.1017/ice.2020.58
22. Ong SWX, Tan YK, Chia PY, Lee TH, Ng OT et al. Air, surface environmental, and personal protective equipment contamination by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from a symptomatic patient. JAMA 2020 March 4; e203227. doi:10.1001/jama.2020.3227
23. Faridi S, Niazi S, Sadeghi K, Naddafi K, Yavarian J et al. A field indoor air measurement of SARS-CoV-2 in the patient rooms of the largest hospital in Iran. The Science of Total Environment 2020; April 6, [Epub ahead of print]. doi: 10.1016/j.scitotenv.2020.138401
24. Wölfel R, Corman VM, Guggemos W, Seilmaier M, Zange S. Virological assessment of hospitalized patients with COVID-2019. Nature 2020; April 1, [Epub ahead of print]. doi: 10.1038/s41586-020-2196-x
25. Wang W, Xu Y, Gao R, Lu R, Han K et al. Detection of SARSCoV-2 in different types of clinical specimens. JAMA 2020; Mar 11: e203786. doi: 10.1001/jama.2020.3786
26. Wu Y, Gou C, Tang L, Hong Z, Zhou J et al. Prolonged presence of SARS-CoV-2 viral RNA in faecal samples. Lancet Gastroenterology and Hepatolology 2020; (5): 434-435. doi: 10.1016/S2468-1253(20)30083-2
27. Schwartz DA. An analysis of 38 pregnant women with COVID-19, their newborn infants, and maternal-fetal transmission of SARS-CoV-2: maternal coronavirus infections and pregnancy outcomes. Archives of Pathology and Laboratory Medicine 2020; March 17, [Epub ahead of print]. doi: 10.5858/arpa.2020-0901-SA
28. Rasmussen SA, Smulian JC, Lednicky JA, Wen TS, Jamieson DJ. Coronavirus disease 2019 (COVID-19) and pregnancy: what obstetricians need to know. American Journal of Obstetrics adn Gynecology 2020; February 24, [Epub ahead of print]. doi: 10.1016/j.ajog.2020.02.017
29. Dashraath P, Jeslyn WJL, Karen LMX, Min LL, Sarah L et al. Coronavirus disease 2019 (COVID-19) pandemic and pregnancy. American Journal of Obstetrics and Gynecology 2020; March 23, [Epub ahead of print]. doi: 10.1016/j. ajog.2020.03.021
30. Du Z, Xu X, Wu Y, Wang L, Cowling BJ et al. Serial interval of COVID-19 among publicly reported confirmed cases. Emerging Infectious Diseases 2020; 26 (6). doi: 10.3201/ eid2606.200357
31. Qian G, Yang N, Ma AHY, et al. A COVID-19 Transmission within a family cluster by presymptomatic infectors in China. Clinical Infectious Diseases 2020 March 23; ciaa316 [Epub ahead of print]. doi: 10.1093/cid/ciaa316
32. Wei WE, Li Z, Chiew CJ, Yong SE, Toh MP et al. Presymptomatic Transmission of SARS-CoV-2–Singapore, January 23–March 16, 2020. MMWR Morbidity Mortality Weekly Report 2020 69 (14): 411-415. doi: 10.15585/mmwr.mm6914e1
33. Zhou F, Yu T, Du R, Fan G, Liu Y et al. Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study. Lancet 2020; 395 (10229): 1054-1062. doi: 10.1016/S0140-6736(20)30566-3
34. Xing Y, Mo P, Xiao Y, Zhao O, Zhang Y et al. Post-discharge surveillance and positive virus detection in two medical staff recovered from coronavirus disease 2019 (COVID-19), China, January to February 2020. Euro Surveillance 2020; 25 (10): 2000191. doi: 10.2807/1560-7917.ES.2020.25.10.2000191
35. Zhang S, Diao M, Yu W, Pei L, Lin Z et al. Estimation of the reproductive number of novel coronavirus (COVID-19) and the probable outbreak size on the Diamond Princess cruise ship: a data-driven analysis. International Journal of Infection Diseases 2020; 93: 201-204. doi: 10.1016/j.ijid.2020.02.033
36. Sanche S, Lin YT, Xu C, Romero-Severson E, Hengartner N et al. High contagiousness and rapid spread of severe acute respiratory syndrome coronavirus 2. Emerging Infectious Diseases 2020; 26 (7). doi: 10.3201/eid2607.200282
37. Yuan J, Li M, Lv G, Lu ZK. Monitoring Transmissibility and Mortality of COVID-19 in Europe. International Journal of Infectious Diseases 2020; Mar 28, [Epub ahead of print]. doi: 10.1016/j.ijid.2020.03.050
38. Liu Y, Gayle AA, Wilder-Smith A, Rocklöv J. The reproductive number of COVID-19 is higher compared to SARS coronavirus. Journal of Travel Medicine 2020; 27 (2): taaa021. /doi: 10.1093/ jtm/taaa021
39. World Health Organization (2020). Coronavirus disease 2019 (COVID-19) Situation Report–84 [online]. Website https:// www.who.int/docs/default-source/coronaviruse/situationreports/20200413-sitrep-84-covid-19.pdf?sfvrsn=44f511ab_2 [accessed 14 April 2020].
40. Istituto Superiore di Sanità (2020). Characteristics of COVID-19 patients dying in Italy Report based on available data on April 2nd, 2020 [online]. Website https://www.epicentro.iss.it/en/ coronavirus/bollettino/Report-COVID-2019_2_april_2020. pdf [accessed 07 April 2020].
41. Ji Y, Ma Z, Peppelenbosch MP, Pan Q. Potential association between COVID-19 mortality and health-care resource availability. The Lancet Global Health 2020; 8 (4): e480. doi: 10.1016/S2214-109X(20)30068-1
42. Grasselli G, Zangrillo A, Zanella A, Antonelli M, Cabrini L et al. Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy. JAMA. 2020; April 6, [Epub ahead of print]. doi:10.1001/jama.2020.5394
43. Wang W, Tang J, Wei F. Updated understanding of the outbreak of 2019 novel coronavirus (2019-nCoV) in Wuhan, China. Journal of Medical Virology 2020; 92 (4): 441-447. doi: 10.1002/jmv.25689
44. Istituto Superiore di Sanità (2020). Integrated surveillance of COVID-19 in Italy [online]. Website https://www.epicentro. iss.it/en/coronavirus/ bollettino/Infografica_6aprile%20ENG. pdf [accessed 07 April 2020].
45. Kang YJ. Mortality rate of infection with COVID-19 in Korea from the perspective of underlying disease Disaster Medicine and Public Health Preparedness 2020; Mar 31, [Epub ahead of print]. doi: 10.1017/dmp.2020.60
46. CDC COVID-19 Response Team. Severe Outcomes Among Patients with Coronavirus Disease 2019 (COVID-19)–United States, February 12–March 16, 2020. MMWR Morbidity and Mortality Weekly Report 2020; 69 (12): 343-346. doi: 10.15585/ mmwr.mm6912e2
47. Yang J, Zheng Y, Gou X, Pu K, Chen Z et al. Prevalence of comorbidities in the novel Wuhan coronavirus (COVID-19) infection: a systematic review and meta-analysis. International Journal of Infectious Diseases. 2020; March 12, [Epub ahead of print]. doi: 10.1016/j.ijid.2020.03.017
48. Emami A, Javanmardi F, Pirbonyeh N, Akbari A. Prevalence of underlying diseases in hospitalized patients with COVID-19: a systematic review and meta-analysis. Archieves of Academic Emergency Medicine 2020; 8 (1): e35.
49. Lippi G, Wong J, Henry BM. Hypertension and its severity or mortality in coronavirus disease 2019 (COVID-19): a pooled analysis. Polish Archives of Internal Medicine 2020; March 31, [Epub ahead of print]. doi: 10.20452/pamw.15272

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