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Louisiana State University

LSU Doctoral Dissertations

Theses/Dissertations

2007

West Nile virus

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Detection Of The Bloodmeal Origin Of Mosquitoes Collected At Alligator Farms, And West Nile Virus Activity In Mosquitoes Collected From Alligator Farms, Sentinel Chicken Surveillance Sites, And Larval Habitats, Isik Unlu Jan 2007

Detection Of The Bloodmeal Origin Of Mosquitoes Collected At Alligator Farms, And West Nile Virus Activity In Mosquitoes Collected From Alligator Farms, Sentinel Chicken Surveillance Sites, And Larval Habitats, Isik Unlu

LSU Doctoral Dissertations

A three year study was conducted to determine if testing mosquitoes collected in modified sentinel chicken boxes for West Nile Virus (WNV) or testing sentinel chickens for WNV antibody would detect WNV activity prior to reports of human cases in East Baton Rouge (EBR) Parish, Louisiana. In one year we also compared the effectiveness of CDC light traps, gravid traps, and sentinel chicken box traps for collecting WNV positive mosquitoes. In all three years, we detected WNV activity in mosquito collections from sentinel chicken box traps prior to the onset of human cases, while there were no seroconversions in the …


Detection Of West Nile Virus Activity In Male And Female Mosquitoes, And Evaluation Of Host-Utilization Patterns Of Mosquitoes, In East Baton Rouge Parish, Louisiana, Andrew James Mackay Jan 2007

Detection Of West Nile Virus Activity In Male And Female Mosquitoes, And Evaluation Of Host-Utilization Patterns Of Mosquitoes, In East Baton Rouge Parish, Louisiana, Andrew James Mackay

LSU Doctoral Dissertations

ABSTRACT Host utilization patterns of female mosquitoes, and WNV infection rates in male and female mosquitoes, were examined in East Baton Rouge Parish to identify potential vectors of West Nile virus (WNV). A total of 244,374 female mosquitoes were collected between November 2002 and October 2004 and tested by viral isolation. Additionally, 131,896 female mosquitoes were tested by VecTest in 2003, and 167,175 female mosquitoes were tested by RT-PCR in 2004. West Nile virus was isolated from 17 of 36 mosquito species assayed by virus isolation, WNV antigens were detected in 9 of 27 species tested by VecTest, and WNV …


Lymphohistiocytic Proliferative Syndrome Of Alligators (Alligator Mississippiensis): A Cutaneous Manifestation Of West Nile Virus, Javier G. Nevarez Jan 2007

Lymphohistiocytic Proliferative Syndrome Of Alligators (Alligator Mississippiensis): A Cutaneous Manifestation Of West Nile Virus, Javier G. Nevarez

LSU Doctoral Dissertations

ABSTRACT In 1999, there were reports of a new type of lesion in the hides of captive reared alligators from Florida. Similar lesions were first reported from alligator hides in Louisiana in 2001; however, it wasn’t until 2002 that small epizootics became apparent. In 2002, the Louisiana Department of Wildlife and Fisheries began a collaborative effort with the Louisiana State University School of Veterinary Medicine (LSU SVM) to help elucidate the etiology of “PIX” disease, later renamed Lymphohistiocytic Proliferative Syndrome of Alligators (LPSA). Preliminary work concluded that LPSA was a systemic disease affecting multiple tissues. Based on the results of …