Related Experiment Video
Updated: Jul 12, 2026

07:23
Detection of Infectious Virus from Field-collected Mosquitoes by Vero Cell Culture Assay
Published on: June 9, 2011
DENGUE TYPES 1 AND 4 VIRUSES IN WILD-CAUGHT MOSQUITOES IN SOUTH INDIA
Abstract:
Three strains of type 1 dengue virus and two strains of type 4 dengue virus have been isolated from Aedes aegypti collected in Vellore, India.
Insights
Researchers identified five dengue virus strains, including three of type 1 and two of type 4, in mosquitoes from Vellore, India. This finding highlights local dengue virus circulation in Aedes aegypti mosquitoes.
Area of Science:
- Medical Entomology
- Virology
- Infectious Diseases
Background:
- Dengue virus (DENV) is a significant global health concern, transmitted primarily by Aedes aegypti mosquitoes.
- Understanding local DENV serotype distribution is crucial for effective disease surveillance and control strategies.
Purpose of the Study:
- To investigate the presence and types of dengue virus circulating in Aedes aegypti mosquito populations in Vellore, India.
Main Methods:
- Mosquitoes (Aedes aegypti) were collected in Vellore, India.
- Viral isolation and identification were performed on collected mosquito samples.
Main Results:
- Three strains of dengue virus type 1 (DENV-1) were isolated.
- Two strains of dengue virus type 4 (DENV-4) were isolated.
Conclusions:
- The study confirms the circulation of DENV-1 and DENV-4 in Aedes aegypti mosquitoes in Vellore.
- These findings provide essential data for regional dengue epidemiology and public health interventions.
Related Concept Videos
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Poliomyelitis
Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
Arboviral Encephalitis
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
American Trypanosomiasis
Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...

