AJTMH Tropical Medicine and Hygiene News
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am. J. Trop. Med. Hyg., 71(5), 2004, pp. 636-638
Copyright © 2004 by The American Society of Tropical Medicine and Hygiene

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (6)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by GU, W.
Right arrow Articles by NOVAK, R. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by GU, W.
Right arrow Articles by NOVAK, R. J.
Related Collections
Right arrow Arboviruses
Right arrow Epidemiology

SHORT REPORT: DETECTION PROBABILITY OF ARBOVIRUS INFECTION IN MOSQUITO POPULATIONS

WEIDONG GU AND ROBERT J. NOVAK
Illinois Natural History Survey, Medical Entomology Laboratory, Champaign, Illinois

 

ABSTRACT

An important component of arbovirus surveillance is monitoring the vector for presence of the pathogen. Intervention and preventive programs need early detection of arboviral activity in mosquito populations. In this report, we examine the factors affecting the probability of detection of mosquito infections. Since arbovirus infection rates in mosquito populations are very low, observations of zero-infected mosquito samples are common. Using statistical models, we describe methods to estimate the probability of detection and upper bounds of confidence intervals of mosquito infection rates as measures of confidence for observations of zero infection. Our results show that detection of low levels of mosquito infections requires large samples (greater than 1,600 individuals) for a high probability (0.8) of detection. Due to focal transmission of arboviruses, grouping samples over different sampling sites and times is often inappropriate for detection of mosquito infection. We emphasize sample size as a key determinant in detection of mosquito infections and recommend intensified entomologic surveys at sentinel sites to detect arboviral activity.

Received January 26, 2004. Accepted for publication May 30, 2004.

Acknowledgments: We thank Drs. Richard Lampman and Robert Wiedenmann for comments on the manuscript. We are grateful to three anonymous reviewers for valuable inputs and comments.

Financial support: This work was supported in part by CDC Grant U50/CCU520518-02 (RJN) and the Department of Natural Resources Illinois Waste Tire Fund (Robert J. Novak).

Authors’ address: Weidong Gu and Robert J. Novak, Illinois Natural History Survey, Medical Entomology Laboratory, 182 Natural Resources Building, 607 E. Peabody Drive, Champaign, IL 61820, Telephone: 217-333-1186, Fax: 217-333-2359, E-mails: wgu{at}inhs.uiuc.edu and rjnovak{at}staff.uiuc.edu.




This article has been cited by other articles:


Home page
 Am J Trop Med HygHome page
M. HACHIYA, M. OSBORNE, C. STINSON, and B. G. WERNER
HUMAN EASTERN EQUINE ENCEPHALITIS IN MASSACHUSETTS: PREDICTIVE INDICATORS FROM MOSQUITOES COLLECTED AT 10 LONG-TERM TRAP SITES, 1979-2004
Am J Trop Med Hyg, February 1, 2007; 76(2): 285 - 292.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2004 by the American Society of Tropical Medicine and Hygiene.