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Descriptive Epidemiology and Trends ...

Sun, Lichen.

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Descriptive Epidemiology and Trends of Human Infections with Avian Influenza A(H7N9) in Mainland China during the First Four Seasons.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Descriptive Epidemiology and Trends of Human Infections with Avian Influenza A(H7N9) in Mainland China during the First Four Seasons./
Author:	Sun, Lichen.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	56 p.
Notes:	Source: Masters Abstracts International, Volume: 57-05.
Contained By:	Masters Abstracts International57-05(E).
Subject:	Public health. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10276914
ISBN:	9780355777468

Descriptive Epidemiology and Trends of Human Infections with Avian Influenza A(H7N9) in Mainland China during the First Four Seasons.
Sun, Lichen.

Descriptive Epidemiology and Trends of Human Infections with Avian Influenza A(H7N9) in Mainland China during the First Four Seasons. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 56 p.

Source: Masters Abstracts International, Volume: 57-05.

Thesis (M.P.H.)--Yale University, 2017.

Objective: To describe the epidemiological characteristics of human infections with avian influenza A(H7N9) in mainland China during 2013--2016; to explore potential risk factors for death; and to examine whether these characteristics have changed in the first four seasons, in order to inform future prevention and control measures.

ISBN: 9780355777468Subjects--Topical Terms:

534748
Public health.

Descriptive Epidemiology and Trends of Human Infections with Avian Influenza A(H7N9) in Mainland China during the First Four Seasons.
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100 1 $a Sun, Lichen. $3 3351164
245 1 0 $a Descriptive Epidemiology and Trends of Human Infections with Avian Influenza A(H7N9) in Mainland China during the First Four Seasons.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 56 p.
500 $a Source: Masters Abstracts International, Volume: 57-05.
500 $a Adviser: James L. Hadler.
502 $a Thesis (M.P.H.)--Yale University, 2017.
520 $a Objective: To describe the epidemiological characteristics of human infections with avian influenza A(H7N9) in mainland China during 2013--2016; to explore potential risk factors for death; and to examine whether these characteristics have changed in the first four seasons, in order to inform future prevention and control measures.
520 $a Methods: The surveillance case information on 766 cases of infection with A(H7N9) virus from 2013 to 2016 were obtained from the China CDC. Simple descriptive statistics were used to analyze basic epidemiological information, exposure factors, underlying medical conditions, antiviral treatment, and risk of death. Chi-square, Wilcoxon signed-rank and Cochran-Armitage trend tests were used to test the significance of difference between groups and 4-year trends. Logistic regression modeling was used to examine risk factors for death.
520 $a Results: Most human infections with A(H7N9) virus were males (69%), over 60 years old (40%), farmers, retirees and unemployed people (66%). Of all cases, 58% were exposed in the live poultry markets and 80% were exposed to poultry. The case mortality rate (CMR) was 41%. Most of the characteristics did not change over the four seasons. Multivariate analysis showed that older age in years (adjusted OR 1.04) and living in Anhui province (adjusted OR 2.26) were risk factors for death. Cases starting antiviral drugs within two days of illness onset (adjusted OR 0.47) or living in Fujian province (adjusted OR 0.48) were less likely to die. Only 10% of patients received antivirals within two days of illness onset.
520 $a Conclusion: More efforts are needed to decrease the incidence and CMR of elder people and to have more cases receive antivirals < 3 days after illness onset. Also, we need more information to explain the difference between the CMR in Anhui and Fujian provinces.
590 $a School code: 0265.
650 4 $a Public health. $3 534748
650 4 $a Epidemiology. $3 568544
650 4 $a Virology. $3 642304
650 4 $a Asian studies. $3 1571829
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710 2 $a Yale University. $b Public Health. $3 2101662
773 0 $t Masters Abstracts International $g 57-05(E).
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792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10276914