On the Analysis of Covid-19 Transmission in Wuhan, Diamond Princess and Jakarta-cluster
Keywords:Covid-19, Contact tracing, SEIR model
The whole world has been recently shocked by the massive spread of Covid-19 without any sign of when it will end. This phenomenon of this scale is understood as a plague that has never been happening in a lifetime. Almost all countries do not have proper preparedness when positive cases are found in a region. In a relatively short time, cases then spread quickly, and panic broke out in the community. With the rapid human to human transmission, and there is no vaccine available, the only way to control the spread of the disease is by implementing a contact tracing and isolation policy. The fact indicated that health officials in many affecting countries have difficulty in detecting individuals who are potentially exposed to the virus. The success of controlling the disease is very much dependent on the ability of the health authority in tracking and isolating the infected and the suspected cases. A transmission model for Covid-19 transmission in the form of SEIR is chosen to fit with the cases in Wuhan, Diamond Princess, and Jakarta-cluster. These cases represent the transmission in a large city, a relatively restricted and dense area, and a small cluster, respectively. The basic reproductive ratio and the infection rate are obtained based on the cumulative data for each case. These indicators can be used for predicting the progress of transmission for similar cases. A simple model for estimating the completing time of contact tracing and isolation is constructed in the form of a differential operator on the cumulative case. This operator represents the number of daily new infected cases. It is shown that for the case of Wuhan, the completing time for contact tracing and isolation is 55 days. This result is important for analyzing the intervention strategy of Covid-19 in an affected region.
World Health Organization, Coronavirus disease 2019 (COVID-19): situation report - 67, March, 2020. https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200320-sitrep-60-covid-19.pdf?sfvrsn=8894045a 2.
Kelley, A., WHO mulls airborne precautions for coronavirus health care workers, Changing America, March 17, 2020. https://thehill.com/changing-america/well-being/prevention-cures/488017-who-mulls-airborne-precautions-for-coronavirus.
Mackay, I. M., Viral pneumonia cluster in Wuhan, central China: 44 cases and counting, virology Down Under, January 3, 2020. https://virologydownunder.com/viral-pneumonia-cluster-in-wuhan-central-china-44-cases-and-counting.
World Health Organization, Novel Coronavirus (2019-nCoV) SITUATION REPORT - 1, 21 JANUARY 2020.
World Health Organization, Coronavirus disease (COVID-2019) situation reports. https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports.
NIID National Institute of Infectious Disease, Field Briefing: Diamond Princess COVID-19 Cases, February 19, 2020. https://www.niid.go.jp/niid/en/2019-ncov-e/9407-covid-dp-fe-01.html.
Press Release Covid-19 Health Department of Indonesia, March 1-12, 2020.
Wu, J. T., Leung, K. and Leung, G. M., Nowcasting and forecasting the potential domestic and international spread of the 2019-nCoV outbreak originating in Wuhan, China: a modelling study, The Lancet, 395(10225), pp.689-697, 2020.
Yang, Z., Zeng, Z., Wang, K., Wong, S.S., Liang, W., Zanin, M., Liu, P., Cao, X., Gao, Z., Mai, Z. and Liang, J., Modified SEIR and AI prediction of the epidemics trend of COVID-19 in China under public health interventions, Journal of Thoracic Disease, 12(2), 2020.
Kuniya T., Prediction of the Epidemic Peak of Coronavirus Disease in Japan, 2020, J. Clin. Med., 9(3), p.789, 2020.
Favier, C., D'egallier, N., Rosa-Freitas, M.G., Boulanger, J.P., Costa Lima, J.R., Luitgards-Moura, J.F., Menk`es, C.E., Mondet, B., Oliveira, C.R.I.S.T.I.A.N.E., Weimann, E.T.S. and Tsouris, P., Early determination of the reproductive number for vector-borne diseases: the case of dengue in Brazil, Tropical Medicine & International Health, 11(3), pp.332-340, 2006.
Jafaruddin, Indratno, S.W., Nuraini, N., Supriatna, A.K. and Soewono, E., Estimation of the basic reproductive ratio for dengue fever at the take-off period of dengue infection, Computational and mathematical methods in medicine, 2015.
Mackay, I. M., Viral pneumonia cluster in Wuhan, central China: 44 cases and counting, virology Down Under, January 3, 2020. https://virologydownunder.com/viral-pneumonia-cluster-in-wuhan-central-china-44-cases-and-counting/.
Coston, M., Wuhan Health Commission Update On Pneumonia Cluster (Jan 11th), Avian Flu Diary, January 11, 2020. https://afludiary.blogspot.com/2020/01/wuhan-health-commission-update-on.html.
Gralinski, L. E. and Menachery, V. D., Return of the Coronavirus: 2019-nCoV, Viruses, 12(2), p. 135, 2020.
Update information on the novel coronavirus in Hubei on March 9, 2020. http://english.wh.gov.cn/sy 3576/whxw1 1/, Accessed on March 9, 2020.
Diamond Princess Updates, Princess Cruise Lines, Ltd. https://www.princess.com/news/notices and advisories/notices/diamond-princess-update.html, Accessed on March 15, 2020.
NIID National Institute of Infectious Disease, Field Briefing: Diamond Princess COVID-19 Cases, 20 Feb Update, February 21, 2020. https://www.niid.go.jp/niid/en/2019-ncov-e/9417-covid-dp-fe-02.html.