Susceptibility Profile of Aedes aegypti L. (Diptera: Culicidae) from Montclair, California, to Commonly Used Pesticides, With Note on Resistance to Pyriproxyfen

2019 ◽  
Vol 56 (4) ◽  
pp. 1047-1054 ◽  
Author(s):  
Tianyun Su ◽  
Jennifer Thieme ◽  
Taylor Lura ◽  
Min-Lee Cheng ◽  
Michelle Q Brown
Keyword(s):  
Aedes Aegypti ◽  
The United States ◽  
Urban Environments ◽  
Sub Saharan Africa ◽  
Modes Of Action ◽  
Breeding Populations ◽  
Laboratory Colony ◽  
Sub Saharan ◽  
The Tropics ◽  
And Control

Abstract The peridomestic anthropophilic Aedes aegypti L. (Diptera: Culicidae) is originated from the wild zoophilic subspecies Aedes aegypti formosus in sub-Saharan Africa, and currently has a broad distribution in human-modified environments of the tropics and subtropics worldwide. In California, breeding populations were initially detected in 2013 in the cities of Fresno, Madera, and San Mateo, and now can be found in 188 cities of 12 counties in the state. Recent genetic studies suggest that this species invaded California on multiple occasions from several regions of the United States and northern Mexico prior to initial detection. As an invasive species and vector for numerous arboviruses, Ae. aegypti is a primary target of surveillance and control in California. In southern California city of Montclair, a population was identified in September 2015, from which a short-term colony was established in an insectary. The susceptibility of this field population to commonly used pesticides with various modes of action, including 15 formulations against larvae and four against adults, was determined, in reference to a susceptible laboratory colony of the same species. No resistance was shown to most pesticides tested. However, tolerance or reduced susceptibility to spinosad, spinetoram, diflubezuron, and fipronil was detected, and modest levels of resistance to pyriproxyfen (resistance ratio = 38.7-fold at IE50 and 81.5-fold at IE90) was observed. Results are discussed based on the field usage and modes of action of the pesticides tested. Strategic selection and application of pesticides against this population of Ae. aegypti in the urban environments should be taken into consideration.

scholarly journals An afebrile heartwater-like syndrome in goats

2013 ◽  
Vol 84 (1) ◽  
Author(s):  
Rhoda Leask ◽  
Kenneth P. Pettey ◽  
Gareth F. Bath
Keyword(s):  
Clinical Signs ◽  
Control Measures ◽  
Sub Saharan Africa ◽  
Limiting Factor ◽  
Febrile Reaction ◽  
Presumptive Diagnosis ◽  
Appropriate Treatment ◽  
Sub Saharan ◽  
Characteristic Features ◽  
And Control

Heartwater is a serious limiting factor for sheep and goat production in the major endemic area of sub-Saharan Africa and therefore most knowledge, research and control methods originate from this region. Whilst the usual or common clinical presentations can be used to make a presumptive diagnosis of heartwater with a good measure of confidence, this is not always the case, and animals suffering from heartwater may be misdiagnosed because their cases do not conform to the expected syndrome, signs and lesions. One aberrant form found occasionally in the Channel Island breeds of cattle and some goats is an afebrile heartwaterlike syndrome. The most constant and characteristic features of this heartwater-like syndrome comprise normal temperature, clinical signs associated with generalised oedema, and nervous signs, especially hypersensitivity. The presumption that the disease under investigation is the afebrile heartwater-like syndrome entails a tentative diagnosis based on history and clinical signs and the response to presumed appropriate treatment (metadiagnosis). The afebrile heartwater-like syndrome presents similarly to peracute heartwater but without the febrile reaction. Peracute cases of heartwater have a high mortality rate, enabling confirmation of the disease on post-mortem examination. Recognition of the afebrile heartwater-like syndrome is important to prevent deaths and identify the need for appropriate control measures.

Comparing breast cancer characteristics across Sub-Saharan Africa and the United States

2018 ◽  
Vol 92 ◽  
pp. S155 ◽  
Author(s):  
S. Grover ◽  
M. Narasimhamurthy ◽  
R. Bhatia ◽  
C. Benn ◽  
K. Fearnhead ◽  
...  
Keyword(s):  
Breast Cancer ◽  
United States ◽  
The United States ◽  
Sub Saharan Africa ◽  
Sub Saharan

scholarly journals Etude de l’effet rémanent de Mavi MNPV dans un champ de niébé

2020 ◽  
Vol 14 (6) ◽  
pp. 2219-2229
Author(s):  
A. Kindozandji ◽  
B.D. Datinon ◽  
K. Amevoin ◽  
A.N. Nondichao ◽  
A.I. Glitho ◽  
...  
Keyword(s):  
Research Work ◽  
Residual Effect ◽  
Maruca Vitrata ◽  
Sub Saharan Africa ◽  
Important Food ◽  
Food Legumes ◽  
Significant Difference ◽  
Sub Saharan ◽  
Rate Of Emergence ◽  
And Control

Le niébé est l’une des légumineuses alimentaires la plus importante dans toutes les régions de l’Afrique Sub-saharienne. L’objectif de ce travail était d’étudier l’effet rémanent de Mavi Multinucléo polyhedrovirus (Mavi MNPV) après la récolte du niébé au champ. Le champ a été traité 5 fois au biopesticide Mavi MNPV à la fréquence de sept jours. Deux semaines après la récolte, deux plants ainsi que les graines de chaque traitement sur chaque unité parcellaire ayant reçu les traitements de Mavi MNPV de 107, 108 et 109 virions/ml ont été collectés et amenés au laboratoire avec le substrat de développement de la plante (sable). Aucune des formulations issues des substrats sable, racines, feuilles, tiges et graines n’a affecté la mortalité des larves L2 et L3 de Maruca vitrata et aucune différence significative n’a été observée entre les traitements et le témoin. Quels que soient les traitements, le taux d’émergence des adultes est élevé ; ce qui signifie que la variation de la concentration de Mavi MNPV ne conditionne pas sa présence dans le sol, les tiges, les feuilles, les racines et les graines. Le biopesticide Mavi MNPV n’est pas persistant dans la nature.Mots clés : Niébé, Mavi MNPV, Maruca vitrata, Effet rémanent   English Title: Study of the residual effect of Mavi MNPV in a cowpea field Cowpea is one of the most important food legumes in all regions of Sub-Saharan Africa. The objective of this research work was to study the persistence effect of Mavi Multinucleus polyhedrovirus (Mavi MNPV) after field harvest of the cowpea. The field was treated 5 times with Mavi MNPV biopesticide at seven days. Two weeks after harvest, two plants as well as the seeds from each treatment on each plot unit that received Mavi MNPV treatments of 107, 108 and 109 virions / ml were removed and brought to the laboratory with the plant development substrate (sand). None of the formulations from sand, root, leaf, stem and seed substrates did not affect the mortality of L2 and L3 larvae of Maruca vitrata and no significant difference was observed between treatments and control. Regardless of the treatments, the rate of emergence of adults is high; this means that the variation in the concentration of Mavi MNPV does not condition its presence in soil, stems, leaves, roots and seeds. Mavi MNPV biopesticide is not persistent in nature.Keywords: Cowpea, Mavi MNPV, Maruca vitrata, Residual effect.      

scholarly journals Hypertension treatment and control in sub-Saharan Africa

BMJ ◽  
1998 ◽  
Vol 317 (7150) ◽  
pp. 76-76 ◽  
Author(s):  
J. Burdon ◽  
R W Montgomery ◽  
R. Walker ◽  
N Unwin ◽  
K G M M Alberti ◽  
...  
Keyword(s):  
Sub Saharan Africa ◽  
Hypertension Treatment ◽  
Sub Saharan ◽  
And Control

Letter To The Editor

PEDIATRICS ◽  
1996 ◽  
Vol 98 (4) ◽  
pp. 796-796
Author(s):  
Samuel L. Katz
Keyword(s):  
Oral Polio Vaccine ◽  
The United States ◽  
Sub Saharan Africa ◽  
Intestinal Immunity ◽  
Polio Vaccine ◽  
Polio Immunization ◽  
Individual Protection ◽  
Sub Saharan ◽  
Community Protection ◽  
Central Nervous System Invasion

Drs Terry and Schneider raise legitimate questions regarding changes in polio immunization recommendations. In response to the former, although two doses of inactivated polio vaccine provide humoral immunity that will protect an individual against central nervous system invasion by wild or revertant attenuated polioviruses, they do not provide intestinal immunity, a valued asset of oral polio vaccine (OPV). Because we live in a global community where jet transportation enables one to move from a polio-endemic area to a polio-free area in less than one day, the introduction of wild polio viruses from sub-Saharan Africa or Southeast Asia poses a legitimate threat and concern to those who wish to maintain community protection, in addition to individual protection, against possible reintroduction of wild virus to the United States.

There Is a Balm in Gilead

2020 ◽  
pp. 135-164
Author(s):  
Dan Royles
Keyword(s):  
International Security ◽  
The United States ◽  
Black Churches ◽  
Bill Clinton ◽  
Sub Saharan Africa ◽  
Aids Education ◽  
Religious Institutions ◽  
Faith Leaders ◽  
Control And Prevention ◽  
Sub Saharan

This chapter describes the work of The Balm in Gilead, which grew out of the efforts of Pernessa Seele, an immunologist at Harlem Hospital, to organize local Black faith leaders to address AIDS through the Harlem Week of Prayer for the Healing of AIDS. As Seele trained African American clergy to incorporate AIDS education into their ministry, she also confronted entrenched homophobia in Black religious institutions. Accordingly, The Balm in Gilead designed programs that would help churches accept and include gay members. In 2001, Seele contracted with the Centers for Disease Control and Prevention to extend her work with Black churches to sub-Saharan Africa, setting up programs in Côte d’Ivoire, Kenya, Nigeria, Zimbabwe, and Tanzania. She argued that because of Black people’s particular relationship with church and faith, the approach that The Balm in Gilead had developed in the United States would work in Africa as well. At the same time, this work intersected with a growing interest in addressing “global AIDS” among U.S. leaders, including Presidents Bill Clinton and George W. Bush, who saw the spread of the disease in Africa as a growing threat to international security.

Perspectives from Four Stages of Development

2019 ◽  
pp. 159-178
Author(s):  
Eleanor M. Fox ◽  
Mor Bakhoum
Keyword(s):  
South African ◽  
Gold Standard ◽  
Developed Countries ◽  
The United States ◽  
Point Of View ◽  
Sub Saharan Africa ◽  
The European Union ◽  
African Countries ◽  
Sub Saharan ◽  
The Developed Countries

This chapter identifies four clusters of nations based on state of development, in order to highlight significant qualitative differences that may call for different law and policies. The first cluster comprises the least developed sub-Saharan African countries with the most resource-challenged competition authorities, such as Benin and Togo. The second cluster compromises nations that have advanced economically to a perceptibly higher level. The third cluster is a “group” of one—South Africa. With all of its challenges, the South African competition regime is as close to a gold standard as there is in sub-Saharan Africa. Finally, for comparison, the fourth cluster comprises the developed countries, led in particular by the European Union and the United States. These nations have open economies, fairly robust markets, good infrastructure, and good institutions. The chapter proceeds to identify, from the point of view of each of the clusters, the most fitting competition framework nationally and globally. The chapter proposes how the divergences can be brought into sympathy.

Introduction

ESC CardioMed ◽  
2018 ◽  
pp. 1185-1186
Author(s):  
Nombulelo P. Magula ◽  
Akira Singh
Keyword(s):  
Black Women ◽  
Hiv Infection ◽  
The United States ◽  
Sub Saharan Africa ◽  
Middle Income ◽  
High Burden ◽  
Immunodeficiency Virus ◽  
Widespread Availability ◽  
Sub Saharan ◽  
Young Black Women

Life expectancy has increased significantly with the widespread availability of antiretroviral therapy. Despite this, new human immunodeficiency virus (HIV) infection rates in low- to middle-income, high-burden countries remain a cause for concern. The greatest impact of infection remains in sub-Saharan Africa, among young black women. However, the majority of studies investigating cardiovascular disease associated with HIV infection have been conducted in the United States and Europe, in predominantly male cohorts.

The Emerging Market of Sub-Saharan Africa and Technology Adoption

2012 ◽  
Vol 3 (1) ◽  
pp. 14-26 ◽  
Author(s):  
Alice S. Etim
Keyword(s):  
Mobile Phones ◽  
Personal Development ◽  
Emerging Market ◽  
The United States ◽  
Emerging Economy ◽  
Sub Saharan Africa ◽  
Mobile Technologies ◽  
Information And Communication ◽  
Sub Saharan ◽  
Study Participants

In the United States, Organization for Economic Co-operation and Development (OECD) countries and several emerging economies in Asia, mobile technologies have become ubiquitous and core to everyday lives. The same cannot be said for many countries in Sub Saharan Africa (SSA). The availability, affordability and use of information and communication technology (ICT) continue to pose a major challenge to the progress of this important emerging economy and their participation in a networked and “flat world.” Writers (Bishop et al., 1999; ADB, 2003; Fisher et al., 2004; Elijah & Ogunlade, 2006; Etim, 2009; Ssewanyana, 2007) argue for the use of ICT to enable the SSA population in the area of economic and personal development. This paper examines the emerging economy of SSA adoption of mobile technologies in comparison to the U.S.A and reports a study on the features that SSA students desire in mobile phones. The key finding was that study participants desired Internet access via mobile phones.

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