scholarly journals Risk of transmission of viral haemorrhagic fevers and the insecticide susceptibility status of aedes aegypti (linnaeus) in some sites in Accra, Ghana

2016 ◽  
Vol 50 (3) ◽  
pp. 136-141
Author(s):  
Takashi Suzuki ◽  
Joseph H Osei ◽  
Sasaki Sasaki ◽  
Michelle Adimazoya ◽  
Maxwell Appawu ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Emerging Diseases ◽  
Research Network ◽  
Insecticide Susceptibility ◽  
Aedes Mosquitoes ◽  
Human Landing ◽  
Survey Results ◽  
The University ◽  
University Of Ghana ◽  
Susceptibility Status

Background: Dengue is one of the emerging diseases that can mostly only be controlled by vector control since there is no vaccine for the disease. Although, Dengue has not been reported in Ghana, movement of people from neighbouring countries where the disease has been reported can facilitate transmission of the disease. Objective: This study was carried on the University of Ghana campus to determine the risk of transmission of viral haemorrhagic fevers and the insecticide susceptibility status of Ae. aegypti in some sites in Accra, Ghana. Design: Larval surveys were carried to inspect containers within households and estimate larval indices and adult Aedes mosquitoes were collected using human landing collection technique. WHO tube assays was used to assess the insecticide susceptibility status of Aedes mosquitoes. Results: Ae. aegypti were the most prevalent species, 75.5% and followed by Ae. vittatus, 23.9 %. Ae. albopictus and Ae. granti were in smaller numbers. Household index (HI), Breteau index (BI), and container index were calculated as 8.2%, 11.2% and 10.3% respectively with man-vector contact rate of 0.67 bites/man-hour estimated for the area. The mortalities recorded for Ae. aegypti from WHO tube assays was 88%, 94%, 80% and 99% for DDT (4%), deltamethrin (0.05%), lambdacyhalothrin (0.05%) and permethrin (0.75%) respectively.Conclusion: The survey results indicated that the density of Aedes mosquitoes was considered to be sufficient to promote an outbreak of viral haemorrhagic fevers on Legon Campus. Aedes mosquitoes were found to be resistant to DDT, deltamethrin and lamdacyhalothrin, but susceptible to permethrin. Funding: This study was supported in part by Japan Initiative for Global Research Network on Infectious Diseases(J-Grid).Keywords: Mosquitoes, Aedes aegypti, insecticide, risk, VHF transmission, Ghana

scholarly journals Insecticide susceptibility status in Mexican populations ofStegomyia aegypti(= Aedes aegypti): a nationwide assessment

2017 ◽  
Vol 32 (2) ◽  
pp. 162-174 ◽  
Author(s):  
P. A. KURI-MORALES ◽  
F. CORREA-MORALES ◽  
C. GONZÁLEZ-ACOSTA ◽  
M. MORENO-GARCIA ◽  
R. SANTOS-LUNA ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Insecticide Susceptibility ◽  
Susceptibility Status ◽  
Mexican Populations

scholarly journals Collection and Rearing of Container Mosquitoes and a 24-h Addition to the CDC Bottle Bioassay

2020 ◽  
Vol 20 (6) ◽  
Author(s):  
Casey Parker
Keyword(s):  
Aedes Aegypti ◽  
Disease Control ◽  
Mosquito Species ◽  
Insecticide Susceptibility ◽  
Resistance Monitoring ◽  
Standardized Protocol ◽  
Container Mosquitoes ◽  
Control And Prevention ◽  
Container Mosquito ◽  
Susceptibility Status

Abstract Container mosquitoes (Diptera: Culicidae) oviposit their eggs in both natural and artificial containers. Many container mosquito species also serve as important vectors of disease-causing pathogens including Aedes aegypti, Ae. albopictus, and Ae. triseriatus. Control of these species can be done through the use of adulticide sprays. The efficacy of these treatments is highly dependent on the insecticide susceptibility status of the local mosquito populations. This paper provides protocols on collecting and rearing container mosquitoes for use in the Centers for Disease Control and Prevention (CDC) bottle bioassay. A brief description of the CDC bottle bioassay is provided as well as a standardized protocol for the incorporation of a 24-h mortality to the CDC bottle bioassay. Results from this 24-h holding addition to the CDC bottle bioassay reveal that some forms of resistance may be missed without the incorporation of the additional mortality reading. These protocols provide a foundation for new laboratories to establish rearing protocols and begin conducting resistance monitoring.

2011 BEEF FORAGE SURVEY RESULTS

EDIS ◽  
2016 ◽  
Vol 2016 (7) ◽  
Author(s):  
Sonja C. Crawford ◽  
Christa L. Kirby ◽  
Tycee Prevatt ◽  
Brent A. Sellers ◽  
Maria L. Silveira ◽  
...  
Keyword(s):  
Program Evaluation ◽  
Organizational Development ◽  
Management Practices ◽  
South Florida ◽  
University Of Florida ◽  
Development Unit ◽  
Survey Results ◽  
County Extension ◽  
Ranch Management ◽  
The University

The University of Florida / IFAS South Florida Beef Forage Program (SFBFP) is composed of county Extension faculty and state specialists.  The members, in conjunction with the UF/IFAS Program Evaluation and Organizational Development unit, created a survey in 1982, which is used to evaluate ranch management practices.  The survey is updated and distributed every 5 years to ranchers in 14 South Florida counties: Charlotte, Collier, DeSoto, Glades, Hardee, Hendry, Highlands, Hillsborough, Lee, Manatee, Martin, Okeechobee, Polk, and Sarasota.  The responses are anonymous.  

Detection of dengue virus in Aedes mosquitoes in Delhi, India

ENTOMON ◽  
2019 ◽  
Vol 44 (3) ◽  
pp. 213-218
Author(s):  
Suresh Chand Kaushik ◽  
Sukhvir Singh ◽  
Purnima Srivastava ◽  
R. Rajendran
Keyword(s):  
Early Intervention ◽  
Early Detection ◽  
Aedes Aegypti ◽  
Dengue Virus ◽  
Infection Rate ◽  
Transmission Season ◽  
Aedes Mosquitoes ◽  
Alternative Approach ◽  
Human Sera ◽  
Minimum Infection Rate

Detection of viruses in human sera particularly in endemic areas is cumbersome and laborious. Therefore, an alternative approach, Immuno-fluorescence assay (IFA) was performed to determine dengue virus (DENV) positivity in mosquitoes. A total of 1055 adult Aedes aegypti female mosquitoes were tested for IFA test against DENV. Minimum infection rate (MIR) for DENV was found higher during August to November 2016 ranging from 10.75 to 20.83. The average yearly MIR was about 6.64. Higher MIR for Ae. aegypti was found in Sarfabad, Noida (12.71) and Khoda Colony, Ghaziabad (11.90). Minimum MIR (4.67) was observed in Sanjay colony (Faridabad). The main contribution of this study resides in the development of a more suitable monitoring system for early detection of viral circulation and to prioritize early intervention in the non-transmission season.

A Simple PCR Assay for Discrimination of Dengue Vectors from Nsukka LGA, Nigeria

2020 ◽  
Vol 10 (1) ◽  
pp. 67-77
Author(s):  
Amos Watentena ◽  
Ikem Chris Okoye ◽  
Ikechukwu Eugene Onah ◽  
Onwude Cosmas Ogbonnaya ◽  
Emmanuel Ogudu
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Mosquito Species ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
Mosquito Vector ◽  
Aedes Mosquitoes ◽  
Allele Specific ◽  
Arboviral Diseases ◽  
Dengue Vectors

Mosquitoes of Aedes species are vectors of several arboviral diseases which continue to be a major public health problem in Nigeria. This study among other things, morphologically identified Aedes mosquitoes collected from Nsukka LGA and used an allele specific PCR amplification for discrimination of dengue vectors. Larval sampling, BG-sentinel traps and modified human landing catches were used for mosquito sampling in two selected autonomous communities of Nsukka LGA (Nsukka and Obimo). A total of 124 Aedes mosquitoes consisting of five (5) different species were collected from April to June, 2019 in a cross-sectional study that covered 126 households, under 76 distinct geographical coordinates. Larvae was mainly collected from plastic containers 73% (n=224), metallic containers 14% (n=43), earthen pots 9% (n=29) and used car tyres 3% (n=9), reared to adult stage 69.35% (n=86), and all mosquitoes were identified using standard morphological keys. Five (5) Aedes mosquito species were captured; Aedes aegypti 83(66.94%), Aedes albopictus 33(26.61%), Aedes simpsoni (4.48%), Aedes luteocephalus (≤1%) and Aedes vittatus (≤1%). Nsukka autonomous community had higher species diversity than Obimo. Allele specific amplification confirmed dengue vectors, Aedes aegypti and Aedes albopictus species on a 2% agarose gel. Since the most recent re-emergence of arboviral diseases is closely associated with Aedes species, findings of this study, therefore, give further evidence about the presence of potential arboviral vectors in Nigeria and describe the role of a simple PCR in discriminating some. Further entomological studies should integrate PCR assays in mosquito vector surveillance.

scholarly journals LAW, RELIGION, AND SAME-SEX RELATIONS IN AFRICA

2021 ◽  
Vol 36 (1) ◽  
pp. 67-71
Author(s):  
M. Christian Green
Keyword(s):  
Moral Issue ◽  
African Continent ◽  
Same Sex ◽  
Biblical Law ◽  
Moral Issues ◽  
International Conference ◽  
The Bible ◽  
Political Act ◽  
The University ◽  
University Of Ghana

Some years back, around 2013, I was asked to write an article on the uses of the Bible in African law. Researching references to the Bible and biblical law across the African continent, I soon learned that, besides support for arguments by a few states in favor of declaring themselves “Christian nations,” the main use was in emerging debates over homosexuality and same-sex relationships—almost exclusively to condemn those relationships. In January 2013, the newly formed African Consortium for Law and Religion Studies (ACLARS) held its first international conference at the University of Ghana Legon. There, African sexuality debates emerged forcefully in consideration of a paper by Sylvia Tamale, then dean of the Makarere University School of Law in Uganda, who argued pointedly, “[P]olitical Christianity and Islam, especially, have constructed a discourse that suggests that sexuality is the key moral issue on the continent today, diverting attention from the real critical moral issues for the majority of Africans . . . . Employing religion, culture and the law to flag sexuality as the biggest moral issue of our times and dislocating the real issue is a political act and must be recognised as such.”

Sign in / Sign up

Export Citation Format

Share Document