Daihai He

Hong Kong Polytechnic University - Department of Applied Mathematics

Hong Kong

China

SCHOLARLY PAPERS

21

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Top 25,275

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3,826

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15

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Scholarly Papers (21)

1.

Epidemic Growth and Reproduction Number for the Novel Coronavirus Disease (COVID-19) Outbreak on the Diamond Princess Cruise Ship from January 20 to February 19, 2020: A Preliminary Data-Driven Analysis

Number of pages: 6 Posted: 24 Feb 2020
The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, Southern Medical University - Clinical Research Centre, Shanghai Normal University, Hong Kong Polytechnic University - Department of Applied Mathematics, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, Huaiyin Normal University, The University of Hong Kong - Li Ka Shing Faculty of Medicine, Xinjiang Medical University - Department of Medical Engineering and Technology, Hong Kong Polytechnic University - School of Nursing, Hong Kong Polytechnic University - Department of Applied Mathematics and The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care
Downloads 573 (89,986)
Citation 5

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novel coronavirus disease; serial interval; reproduction number; statistical analysis; Diamond Princess ship

2.

A Simple Model to Estimate the Transmissibility of SARS-COV-2 Beta, Delta and Omicron Variants in South Africa

Number of pages: 12 Posted: 05 Jan 2022
Yangyang Yu, Yuan Liu, Shi Zhao and Daihai He
Hong Kong Polytechnic University, Hong Kong Polytechnic University - Department of Applied Mathematics, The Chinese University of Hong Kong (CUHK) - Shenzhen Research Institute and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 467 (115,603)
Citation 3

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COVID-19; SARS-COV-2; Beta; Delta; Omicron; Mathematical Modelling

3.

The Correlation between BCG Immunization Coverage and the Severity of COVID-19

Number of pages: 6 Posted: 07 Apr 2020
Xinjiang Agricultural University - College of Mathematics and Physics, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre, Hong Kong Polytechnic University - School of Nursing and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 396 (140,110)
Citation 7

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COVID-19; BCG; morbidity and mortality; median age

4.

Reduction in the Infection Fatality Rate of Omicron (B.1.1.529) Variant Compared to Previous Variants in South Africa

Number of pages: 5 Posted: 20 Jan 2022
Yuan Liu, Yangyang Yu, Yanji Zhao and Daihai He
Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong Polytechnic University - Department of Applied Mathematics and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 387 (143,726)

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COVID-19; Omicron; Infection fatality rate

5.

History Is the Best Model – A Comparison of the COVID-19 with the 1918-19 Pandemic Influenza in United Kingdom

Number of pages: 4 Posted: 30 Apr 2020
Hong Kong Polytechnic University - Department of Applied Mathematics, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, Xinjiang Agricultural University - College of Mathematics and Physics, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre, Shanghai Normal University, Hong Kong Polytechnic University - Department of Applied Mathematics and Hong Kong Polytechnic University - School of Nursing
Downloads 278 (204,649)
Citation 2

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multiple waves, influenza, COVID-19, post-pandemic

6.

The Attack Rate of the COVID-19 in a Year

Number of pages: 3 Posted: 27 Mar 2020
Hong Kong Polytechnic University - Department of Applied Mathematics, Shanghai Normal University, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre, Hong Kong Polytechnic University - Department of Applied Mathematics and Hong Kong Polytechnic University - School of Nursing
Downloads 258 (220,578)
Citation 1

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attack rate; COVID-19; influenza

7.

An Updated Comparison of COVID-19 and Influenza

Number of pages: 5 Posted: 14 Apr 2020
Hong Kong Polytechnic University - Department of Applied Mathematics, Shanghai Normal University, Xinjiang Agricultural University - College of Mathematics and Physics, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre, Hong Kong Polytechnic University - Department of Applied Mathematics and Hong Kong Polytechnic University - School of Nursing
Downloads 231 (245,723)
Citation 1

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case fatality rate; infection attack rate; basic reproductive number

8.

Individual Variation in Infectiousness of Coronavirus 2019 Implies Difficulty in Control

Number of pages: 6 Posted: 23 Mar 2020 Last Revised: 20 Jun 2020
Hong Kong Polytechnic University - Department of Applied Mathematics, The Chinese University of Hong Kong (CUHK) - Shenzhen Research Institute, affiliation not provided to SSRN, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, Hong Kong Polytechnic University - Department of Applied Mathematics, Chengdu University of Traditional Chinese Medicine, affiliation not provided to SSRN and Hong Kong Polytechnic University - School of Nursing
Downloads 182 (305,816)

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COVID-19, basic reproductive number, dispersion, negative binomial, mitigation

9.

Attack rate of COVID-19 and the onset of herd immunity in Manaus, Brazil

Number of pages: 8 Posted: 07 Jul 2021
Hong Kong Polytechnic University - Department of Applied Mathematics, University of Amsterdam, Hong Kong Polytechnic University - Department of Applied Mathematics, Oswaldo Cruz Foundation (FIOCRUZ) - Gonçalo Moniz Institute (IGM), Federal University of Pelotas (UFPel), Instituto Leônidas & Maria Deane (Fiocruz) and Royal Melbourne Institute of Technolog (RMIT University) - School of Science
Downloads 171 (323,152)
Citation 1

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COVID-19; Manaus; Attack Rate; Herd-immunity; Variant

10.

Re-Analysis of the Relative Transmissibility of Asymptomatic Cases among Close Contacts

Number of pages: 3 Posted: 31 Mar 2020
Hong Kong Polytechnic University - Department of Applied Mathematics, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, University of Michigan at Ann Arbor, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care and Hong Kong Polytechnic University - School of Nursing
Downloads 155 (351,348)
Citation 3

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asymptomatic transmission; COVID-19; close contacts

11.

The 1978 English Boarding School Influenza Outbreak: Where the Classic Seir Model Fails

Number of pages: 33 Posted: 04 Oct 2023
Hong Kong Polytechnic University - Department of Applied Mathematics, BNU-HKBU United International College, Royal Melbourne Institute of Technolog (RMIT University) - School of Science and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 125 (416,255)

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modelling, children’s pandemic, delay differential equations, residence time, natural history, influenza progression model

12.

Model analysis of vaccination effectiveness by state in the United States

Number of pages: 18 Posted: 10 Jan 2022
Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University - Department of Applied Mathematics and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 113 (448,913)

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COVID-19; variant of concern; vaccination; mathematical modeling; United States

13.

Two Waves of COVID-19 in Brazilian Cities and Vaccination Impact

Number of pages: 14 Posted: 10 Dec 2021
Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University - Department of Applied Mathematics, Huaiyin Normal University and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 102 (483,234)

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COVID-19; Brazil; SARI; Infection Fatality Rate; Infection Attack Rate; Reinfection; Vaccination

14.

Large-Scale Synchronized Replacement of Alpha Strain by the Delta Strain

Number of pages: 8 Posted: 03 Dec 2021
Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University - Department of Applied Mathematics, The Chinese University of Hong Kong (CUHK) - Shenzhen Research Institute, Huaiyin Normal University and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 79 (567,301)

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variants of concern, Delta strain, Alpha variant, synchronization

15.

Education and COVID: State-Wise Growth Rate of COVID-19 in the United States is Associated with Educational Attainment Rate

Number of pages: 4 Posted: 27 Mar 2020
Hong Kong Polytechnic University - Department of Applied Mathematics, Washington State University - Department of Mathematics and Statistics, The Chinese University of Hong Kong (CUHK) - Shenzhen Research Institute, Hong Kong Polytechnic University - Department of Applied Mathematics, Southern Medical University - Clinical Research Centre and Hong Kong Polytechnic University - School of Nursing
Downloads 65 (631,136)

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education attainment; COVID-19; United States; per capita income; Racial or ethnic origin

16.

Forecasting of Influenza Activity and Associated Hospital Admission Burden and Estimating the Impact of COVID-19 Pandemic on 2019/20 Winter Season in Hong Kong

Number of pages: 38 Posted: 01 Dec 2023
The University of Hong Kong, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, The University of Hong Kong, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, Hong Kong Polytechnic University - Department of Applied Mathematics, The University of Hong Kong - School of Public Health, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control and The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control
Downloads 58 (667,880)

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17.

The Effectiveness of the COVID-19 Vaccination Campaign in 2021: Inconsistency in Key Studies

Number of pages: 34 Posted: 12 Mar 2024
Hong Kong Polytechnic University - Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong Polytechnic University - Department of Applied Mathematics, Huaiyin Normal University, Royal Melbourne Institute of Technolog (RMIT University) - School of Science and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 48 (727,368)

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COVID-19, vaccination campaign, lives saved, mathematical modelling, data analysis

18.

Propensity Score Analysis with Missing Data Using a Multi-Task Neural Networks

Number of pages: 22 Posted: 13 Jul 2022
Chengdu University of Traditional Chinese Medicine, Hong Kong Baptist University, Hong Kong Polytechnic University - Department of Applied Mathematics, Lanzhou University - Evidence-Based Social Science Research Center, Guangzhou University of Chinese Medicine - Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, Chengdu Medical College, Shandong University and Sichuan University
Downloads 43 (760,752)

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Observational study, Propensity score analysis, Neural Network, Multitasking learning, Causal effect estimation, Inverse probability weighting

19.

Further Discussion on the Attack Rate and Reinfections in Manaus, Brazil

Number of pages: 5 Posted: 16 Dec 2021
Hong Kong Polytechnic University - Department of Applied Mathematics, University of Amsterdam, Hong Kong Polytechnic University - Department of Applied Mathematics, Oswaldo Cruz Foundation (FIOCRUZ) - Gonçalo Moniz Institute (IGM), Federal University of Pelotas (UFPel), Instituto Leônidas & Maria Deane (Fiocruz) and Royal Melbourne Institute of Technolog (RMIT University) - School of Science
Downloads 37 (804,614)

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COVID-19; Manaus; Re-infection; New Variant; Serological Survey; Blood Donor

20.

The Impact of COVID-19 Vaccination Campaign in Hong Kong SAR China and Singapore

Number of pages: 16 Posted: 15 Dec 2022 Last Revised: 27 Dec 2022
Boyu Yu, Qiong Li, Jing Chen and Daihai He
Hong Kong Polytechnic University - Department of Applied Mathematics, BNU-HKBU United International College, Hong Kong Polytechnic University - Department of Applied Mathematics and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 36 (812,279)

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21.

Modeling and Prediction of Seasonal Transmission of Schistosomiasis in China

Number of pages: 14 Posted: 21 Sep 2022
Xinjiang Agricultural University - College of Mathematics and Physics, Xinjiang Agricultural University, Xinjiang Agricultural University and Hong Kong Polytechnic University - Department of Applied Mathematics
Downloads 22 (935,266)

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Schistosomiasis, Seasonal effects, ARIMA model, ARCH effect, ARIMA-GARCH model