Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study
An entomological monitoring of Japanese encephalitis vectors from the Cuddalore district, Tamil Nadu was undertaken at biweekly intervals for 1 hr after dusk for five years to find out the abundance and JE virus activity longitudinally in three villages. A total of 95,644 vectors belonging to 31 spe...
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2016-12-01
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| Series: | Journal of Entomological and Acarological Research |
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| Online Access: | http://www.pagepressjournals.org/index.php/jear/article/view/5630 |
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| author | P. Philip Samuel D. Ramesh V. Thenmozhi J. Nagaraj M. Muniaraj N. Arunachalam |
| author_facet | P. Philip Samuel D. Ramesh V. Thenmozhi J. Nagaraj M. Muniaraj N. Arunachalam |
| author_sort | P. Philip Samuel |
| collection | DOAJ |
| description | An entomological monitoring of Japanese encephalitis vectors from the Cuddalore district, Tamil Nadu was undertaken at biweekly intervals for 1 hr after dusk for five years to find out the abundance and JE virus activity longitudinally in three villages. A total of 95,644 vectors belonging to 31 species constituted predominantly by <em>Culex vishnui</em> subgroup and <em>Culex gelidus</em> 98.5%. JE virus was identified from <em>Cx. tritaeniorhynchus</em> (18), <em>Cx. vishnui</em> (1) and <em>Cx. gelidus</em> (6) giving infection rate of 0.482, 0.608 and 0.221 respectively. Abundance of <em>Cx. tritaeniorhynchus</em> and <em>Cx. gelidus</em> differed significantly by area, season and year (P<0.05) whereas <em>Cx. vishuni</em> differed significantly by season and year (P<0.05). Transmission was not observed throughout all the seasons and the infection rate was recorded maximum during Hot-Wet season 0.46 (confidence interval: 0.17-1.02). <em>Culex tritaeniorhynchus</em> dominated the catch and the <em>Culex gelidus</em> steadily increased in its abundance during this period compared to the earlier studies conducted from these areas which acts as a secondary vector along with the major vector, <em>Cx. tritaeniorhynchus.</em> |
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| format | Article |
| id | doaj.art-b3da7c15b498467eb212e587f224bd99 |
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| issn | 2038-324X 2279-7084 |
| language | English |
| last_indexed | 2024-12-14T12:55:18Z |
| publishDate | 2016-12-01 |
| publisher | PAGEPress Publications |
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| series | Journal of Entomological and Acarological Research |
| spelling | doaj.art-b3da7c15b498467eb212e587f224bd992022-12-21T23:00:35ZengPAGEPress PublicationsJournal of Entomological and Acarological Research2038-324X2279-70842016-12-0148336637110.4081/jear.2016.56305040Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal studyP. Philip Samuel0D. Ramesh1V. Thenmozhi2J. Nagaraj3M. Muniaraj4N. Arunachalam5Centre for Research in Medical Entomology, Indian Council of medical Research, Department of Health Research, MaduraiCentre for Research in Medical Entomology, Indian Council of medical Research, Department of Health Research, MaduraiCentre for Research in Medical Entomology, Indian Council of medical Research, Department of Health Research, MaduraiCentre for Research in Medical Entomology, Indian Council of medical Research, Department of Health Research, MaduraiCentre for Research in Medical Entomology, Indian Council of medical Research, Department of Health Research, MaduraiCentre for Research in Medical Entomology, Indian Council of medical Research, Department of Health Research, MaduraiAn entomological monitoring of Japanese encephalitis vectors from the Cuddalore district, Tamil Nadu was undertaken at biweekly intervals for 1 hr after dusk for five years to find out the abundance and JE virus activity longitudinally in three villages. A total of 95,644 vectors belonging to 31 species constituted predominantly by <em>Culex vishnui</em> subgroup and <em>Culex gelidus</em> 98.5%. JE virus was identified from <em>Cx. tritaeniorhynchus</em> (18), <em>Cx. vishnui</em> (1) and <em>Cx. gelidus</em> (6) giving infection rate of 0.482, 0.608 and 0.221 respectively. Abundance of <em>Cx. tritaeniorhynchus</em> and <em>Cx. gelidus</em> differed significantly by area, season and year (P<0.05) whereas <em>Cx. vishuni</em> differed significantly by season and year (P<0.05). Transmission was not observed throughout all the seasons and the infection rate was recorded maximum during Hot-Wet season 0.46 (confidence interval: 0.17-1.02). <em>Culex tritaeniorhynchus</em> dominated the catch and the <em>Culex gelidus</em> steadily increased in its abundance during this period compared to the earlier studies conducted from these areas which acts as a secondary vector along with the major vector, <em>Cx. tritaeniorhynchus.</em>http://www.pagepressjournals.org/index.php/jear/article/view/5630Culex tritaeniorhynchusCx. gelidus and Cx. vishnuiinfection rateJapanese encephalitisCuddalore. |
| spellingShingle | P. Philip Samuel D. Ramesh V. Thenmozhi J. Nagaraj M. Muniaraj N. Arunachalam Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study Journal of Entomological and Acarological Research Culex tritaeniorhynchus Cx. gelidus and Cx. vishnui infection rate Japanese encephalitis Cuddalore. |
| title | Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study |
| title_full | Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study |
| title_fullStr | Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study |
| title_full_unstemmed | Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study |
| title_short | Japanese Encephalitis vector abundance and infection frequency in Cuddalore District, Tamil Nadu, India: a five-year longitudinal study |
| title_sort | japanese encephalitis vector abundance and infection frequency in cuddalore district tamil nadu india a five year longitudinal study |
| topic | Culex tritaeniorhynchus Cx. gelidus and Cx. vishnui infection rate Japanese encephalitis Cuddalore. |
| url | http://www.pagepressjournals.org/index.php/jear/article/view/5630 |
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