Learn About La Crosse Encephalitis

Total Page:16

File Type:pdf, Size:1020Kb

Learn About La Crosse Encephalitis A look at La Crosse Viral Encephalitis . and how to control it What is La Crosse Encephalitis? What You Can Do To Protect Mosquitoes Can be Controlled Yourself? La Crosse viral encephalitis is a severe The most effective and economical disease of the central nervous system 1. Fill in basal tree holes temporarily with method of reducing adult mosquitoes affecting persons of all ages, but usually sand or other coarse soil. over a large area is to prevent emergence children. (Encephalitis means from as many breeding areas as possible. inflammation of the brain.) 2. Keep old tires under cover where Adult mosquitoes, once emerged, water can’t get in them. Do not use disperse over large areas; hence, it is The virus, which produces fever, tires to hold down tarps or other easier to control the larvae when they are headache, drowsiness, vomiting and, in covers. concentrated in the water. half of the cases, convulsions, is carried 3. Don’t leave empty cans, bottles, by a certain type of mosquito called buckets, or other containers lying Ochlerotatus triseriatus. La Crosse viral around where they can collect water. Source Reduction eliminates artificial encephalitis is a very common disease in breeding sites such as tin cans, tires and 4. Have your children use mosquito the United States. tree holes, all of which can breed pest repellent and wear light colored and disease carrying mosquitoes. clothing that covers their arms and Fortunately, few die of the disease; but legs, especially in the late afternoon – because of the severity of the symptoms, the mosquito’s peak biting period. While larvae control won’t solve the entire good hospital care is required, usually for problem (adults from outside the from seven to ten days. There is no 5. If your child develops symptoms of controlled area may fly in), it will go a long specific drug known to alter the course of fever, severe headache, vomiting, way toward making it possible to spend the disease, but study has shown us how drowsiness or convulsions, get evenings out doors devoid of the problem to prevent it. medical attention immediately. of mosquitoes. ***If your child develops symptoms of The Ochlerotatus triseriatus mosquito that Climatic conditions have much to do with fever, severe headache, vomiting, spreads the virus breeds in any object fluctuations of mosquito populations. drowsiness or convulsions, get medical that holds water rover a prolonged Extremely dry conditions preclude attention immediately. period. This includes basal tree holes hatching although given amounts of and unrimmed tires. They can also rainfall will cause broods to come off. breed in cans, bottles, buckets, and in Eggs not hatched because of low rainfall standing water found on tarps (such as are still available for hatching given are used to cover woodpiles and open pit proper climatic conditions. silos). Ochlerotatus triseriatus will not breed in wetlands, ponds, or ditches. .
Recommended publications
  • Other Tick Borne Illnesses Illnesses Colorado Tick Fever Babesiosis Tularemia Ehrlichiosis
    Disclosures Common Bites and Stings • None David Hartnett, MD Assistant Professor Department of Emergency Medicine The Ohio State University Wexner Medical Center Learning Objectives Impact of bites and stings • Discuss the incidence of bites and stings in the US • 1.5 million ED visits per year • Review management of clinically relevant species • Insects • Mammals • Arachnids • Reptiles • Describe indications and methods of rabies prophylaxis 1 Hymenoptera • Bees, vespids, fire ants • Symptomatic control Insects - 50% • Localized, systemic, and anaphylactic Source: Alvesgaspar - Own work CC BY-SA 3.0, reactions • Stinger removal • Killer Bees Source: James Heilman, MD Own work, CC BY-SA 3.0, Africanized Killer Bees LD50 (mg/kg) Venom (µg) European Honey Bee 2.8 148 Africanized Honey Bee 2.8 156 Cape Honey Bee 3.0 187 LD50 for a 110 lb person Rule of Thumb Honey Bees – 890 Stings 6 stings/lb – survival Yellow Jackets – 3600 stings 8 stings/lb – LD50 Source: James Heilman, MD - Own work CC BY-SA 3.0, Paper wasps – 850 stings 10 stings/lb – Death Source: James Heilman, MD Own work, CC BY-SA 3.0, 2 Bed bugs Mosquito borne illnesses • Behavior • Travel medicine • Chikungunya • Transmission • Dengue • Incidence • Japanese Encephalitis • Malaria • Prevention • Yellow Fever • Zika • Symptom control • Infestation treatment • Endemic to United States Source: CDC • Eastern Equine Encephalitis • St Louis Encephalitis • La Crosse Encephalitis • West Nile La Crosse Virus Encephalitis – West Nile Virus – incidence by Incidence per 100,000 state per
    [Show full text]
  • Identification Key for Mosquito Species
    ‘Reverse’ identification key for mosquito species More and more people are getting involved in the surveillance of invasive mosquito species Species name used Synonyms Common name in the EU/EEA, not just professionals with formal training in entomology. There are many in the key taxonomic keys available for identifying mosquitoes of medical and veterinary importance, but they are almost all designed for professionally trained entomologists. Aedes aegypti Stegomyia aegypti Yellow fever mosquito The current identification key aims to provide non-specialists with a simple mosquito recog- Aedes albopictus Stegomyia albopicta Tiger mosquito nition tool for distinguishing between invasive mosquito species and native ones. On the Hulecoeteomyia japonica Asian bush or rock pool Aedes japonicus japonicus ‘female’ illustration page (p. 4) you can select the species that best resembles the specimen. On japonica mosquito the species-specific pages you will find additional information on those species that can easily be confused with that selected, so you can check these additional pages as well. Aedes koreicus Hulecoeteomyia koreica American Eastern tree hole Aedes triseriatus Ochlerotatus triseriatus This key provides the non-specialist with reference material to help recognise an invasive mosquito mosquito species and gives details on the morphology (in the species-specific pages) to help with verification and the compiling of a final list of candidates. The key displays six invasive Aedes atropalpus Georgecraigius atropalpus American rock pool mosquito mosquito species that are present in the EU/EEA or have been intercepted in the past. It also contains nine native species. The native species have been selected based on their morpho- Aedes cretinus Stegomyia cretina logical similarity with the invasive species, the likelihood of encountering them, whether they Aedes geniculatus Dahliana geniculata bite humans and how common they are.
    [Show full text]
  • Joint Statement on Insect Repellents by EPA And
    Joint Statement on Insect Repellents from the Environmental Protection Agency and the Centers for Disease Control and Prevention July 17, 2014 The Environmental Protection Agency (EPA) and Centers for Disease Control and Prevention (CDC) are recommending that the public use insect repellents and take other precautions to avoid biting insects that carry serious diseases. The incidence of these diseases is on the rise. This joint statement discusses diseases that are transmitted by ticks and mosquitoes, the role of government in vector control and disease prevention, the history of repellents, how to use repellents as part of an integrated control program, and how to select and use a repellent. Introduction and Purpose CDC and EPA developed this joint statement to promote awareness of repellents and to highlight the effectiveness of repellents in preventing mosquito and tick bites. The agencies believe that promoting the use of repellents may reduce the impact of diseases and nuisance effects caused by these pests. Vector-borne diseases, such as those transmitted by mosquitoes and ticks, are among the world's leading causes of illness and death today. A wide variety of arthropods, including mosquitoes, ticks, fleas, black flies, sand flies, horse flies, stable flies, kissing bugs, lice and mites, feed on human blood. Among these, mosquitoes and ticks transmit some of the most serious vector- borne diseases both globally and within the United States. Diseases Transmitted by Mosquitoes and Ticks Mosquito-transmitted West Nile virus caused over 36,000 disease cases and 1,500 deaths in the United States between 1999 and 2012 (CDC, 2012). Mosquitoes also transmit other viruses that cause severe disease in the United States, including La Crosse encephalitis, eastern equine encephalitis and dengue.
    [Show full text]
  • Updated Information Regarding Mosquito Repellents.PDF
    Updated Information regarding Mosquito Repellents May 8, 2008 Repellents are an important tool to assist people in protecting themselves from mosquito-borne diseases. CDC recommends the use of products containing active ingredients which have been registered by the U.S. Environmental Protection Agency (EPA) for use as repellents applied to skin and clothing. EPA registration of repellent active ingredients indicates the materials have been reviewed and approved for efficacy and human safety when applied according to the instructions on the label. Repellents for use on skin and clothing: CDC evaluation of information contained in peer-reviewed scientific literature and data available from EPA has identified several EPA registered products that provide repellent activity sufficient to help people avoid the bites of disease carrying mosquitoes. Products containing these active ingredients typically provide reasonably long-lasting protection: • DEET (Chemical Name: N,N-diethyl-m-toluamide or N,N-diethly-3-methyl- benzamide) • Picaridin (KBR 3023, Chemical Name: 2-(2-hydroxyethyl)-1- piperidinecarboxylic acid 1-methylpropyl ester ) • Oil of Lemon Eucalyptus* or PMD (Chemical Name: para-Menthane-3,8- diol)the synthesized version of oil of lemon eucalyptus • IR3535 (Chemical Name: 3-[N-Butyl-N-acetyl]-aminopropionic acid, ethyl ester) EPA characterizes the active ingredients DEET and Picaridin as “conventional repellents” and Oil of Lemon Eucalyptus, PMD, and IR3535 as “biopesticide repellents”, which are derived from natural materials. For more information on repellent active ingredients see http://www.epa.gov/pesticides/health/mosquitoes/ai_insectrp.htm ). Published data indicate that repellent efficacy and duration of protection vary considerably among products and among mosquito species and are markedly affected by ambient temperature, amount of perspiration, exposure to water, abrasive removal, and other factors.
    [Show full text]
  • Mosquitoes in Ohio
    Mosquitoes in Ohio There are about 60 different species of mosquito in Ohio. Several of them are capable of transmitting serious, possibly even fatal diseases, such as mosquito-borne encephalitis and malaria to humans. Even in the absence of disease transmission, mosquito bites can result in allergic reactions producing significant discomfort and itching. In some cases excessive scratching can lead to bleeding, scabbing, and possibly even secondary infection. Children are very susceptible to this because they find it difficult to stop scratching. Frequently, they are outside playing and do not realize the extent of their exposure until it is too late. Female mosquitoes can produce a painful bite during feeding, and, in excessive numbers, can inhibit outdoor activities and lower property values. Mosquitoes can be a significant burden on animals, lowering productivity and efficiency of farm animals. Life Cycle Adult mosquitoes are small, fragile insects with slender bodies; one pair of narrow wings (tiny scales are attached to wing veins); and three pairs of long, slender legs. They vary in length from 3/16 to 1/2 inch. Mosquitoes have an elongate "beak" or piercing proboscis. Eggs are elongate, usually about 1/40 inch long, and dark brown to black near hatching. Larvae or "wigglers" are filter feeders that move with an S-shaped motion. Larvae undergo four growth stages called instars before they molt into the pupa or "tumbler" stage. Pupae are comma-shaped and non-feeding and appear to tumble through the water when disturbed. 1 Habits and Diseases Carried Mosquitoes may over-winter as eggs, fertilized adult females or larvae.
    [Show full text]
  • Setting up a Mosquito Control Program
    SETTING UP A MOSQUITO CONTROL PROGRAM JEROME GODDARD, Ph.D. MEDICAL ENTOMOLOGIST BUREAU OF GENERAL ENVIRONMENTAL SERVICES MISSISSIPPI STATE DEPARTMENT OF HEALTH P. O. BOX 1700 JACKSON, MISSISSIPPI 39215-1700 601-576-7689 UPDATED JUNE 2003 PREFACE Mosquito control is undergoing major changes in Mississippi. Instead of just routinely spraying malathion or a pyrethroid out of trucks several nights weekly, mosquito control personnel are now trying to get the most control with the least amount of pesticides. This involves source reduction to eliminate mosquito breeding areas, larviciding areas of standing water, and carefully timed, strategically placed insecticides aimed at the adult mosquitoes. This booklet outlines the components of an integrated mosquito control program with emphasis on incorporating surveillance and larviciding into existing programs. General information is provided as a review of control and surveillance techniques commonly used. In addition, this booklet describes some problem mosquitoes found in Mississippi and discusses their importance as public health and pest problems. NOTE: Much of this publication was originally compiled and illustrated by the former medical entomologist with the Mississippi State Department of Health, Mr. Ed Bowles. It has been revised several times by myself and Dr. Brigid Elchos, State Public Health Veterinarian. Jerome Goddard, Ph.D. Medical Entomologist MOSQUITO CONTROL AND PUBLIC HEALTH Mosquitoes and the diseases they carry have played an important role in our history. Epidemics of mosquito-borne diseases were once common in the United States. Outbreaks of yellow fever occurred as far north as Philadelphia during the colonial period, and epidemics took many lives in New Orleans until 1905.
    [Show full text]
  • Diptera: Culicidae) in the Laboratory Sara Marie Erickson Iowa State University
    Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1-1-2005 Infection and transmission of West Nile virus by Ochlerotatus triseriatus (Diptera: Culicidae) in the laboratory Sara Marie Erickson Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Recommended Citation Erickson, Sara Marie, "Infection and transmission of West Nile virus by Ochlerotatus triseriatus (Diptera: Culicidae) in the laboratory" (2005). Retrospective Theses and Dissertations. 18773. https://lib.dr.iastate.edu/rtd/18773 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Infection and transmission of West Nile virus by Ochlerotatus triseriatus (Diptera: Culicidae) in the laboratory by Sara Marie Erickson A thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major: Entomology Program of Study Committee: Wayne A. Rowley, Major Professor Russell A. Jurenka Kenneth B. Platt Marlin E. Rice Iowa State University Ames, Iowa 2005 Copyright © Sara Marie Erickson, 2005. All rights reserved. 11 Graduate College Iowa State University This is to certify that the master's thesis of Sara Marie Erickson has met the thesis requirements of Iowa State University Signatures have been redacted for privacy lll TABLE OF CONTENTS LIST OF TABLES lV ABSTRACT v CHAPTER 1. GENERAL INTRODUCTION Thesis organization 1 Literature review 1 References 18 CHAPTER 2.
    [Show full text]
  • T3-B4p2innovativemosquitocontrol.Pdf
    Suffolk County Vector Control and Wetlands Management Long-Term Plan Literature Review Task3 – Innovations in and Unconventional Mosquito Control March 2005 SUFFOLK COUNTY VECTOR CONTROL AND WETLANDS MANAGEMENT LONG - TERM PLAN AND ENVIRONMENTAL IMPACT STATEMENT PROJECT SPONSOR Steve Levy Suffolk County Executive Department of Public Works Department of Health Services Charles J. Bartha, P.E. Brian L. Harper, M.D., M.P.H. Commissioner Commissioner Richard LaValle, P.E. Vito Minei, P.E. Chief Deputy Commissioner Director, Division of Environmental Quality Leslie A. Mitchel Deputy Commissioner PROJECT MANAGEMENT Project Manager: Walter Dawydiak, P.E., J.D. Chief Engineer, Division of Environmental Quality, Suffolk County Department of Health Services Suffolk County Department of Public Suffolk County Department of Works, Division of Vector Control Health Services, Office of Ecology Dominick V. Ninivaggi Martin Trent Superintendent Acting Chief Tom Iwanejko Kim Shaw Entomologist Bureau Supervisor Mary E. Dempsey Robert M. Waters Biologist Bureau Supervisor Laura Bavaro Senior Environmental Analyst Erin Duffy Environmental Analyst Phil DeBlasi Environmental Analyst Jeanine Schlosser Principal Clerk Cashin Associates, P.C. and Cameron Engineering & Associates, LLP i Suffolk County Vector Control and Wetlands Management Long-Term Plan Literature Review Task3 – Innovations in and Unconventional Mosquito Control March 2005 SUFFOLK COUNTY LONG TERM PLAN CONSULTANT TEAM Cashin Associates, P.C. Hauppauge, NY Subconsultants Cameron Engineering, L.L.P.
    [Show full text]
  • Mosquitoborne Diseases of Minnesota
    Are mosquitoborne diseases treatable? There are no medications to treat viruses that are spread by mosquitoes. Instead, the symptoms are treated with supportive care. People with mild illness typically recover A Culex tarsalis on their own. Those with severe nervous mosquito as it is about to begin system illness may need to be hospitalized feeding and nerve damage and death may occur. How can I protect myself from a mosquitoborne disease? • Know that July through September is the highest risk of mosquitoborne disease in Minnesota - West Nile virus disease – dawn and dusk for Culex tarsalis mosquitoes hat is a mosquitoborne - La Crosse encephalitis – daytime What symptoms should I watch for? for Aedes triseriatus mosquitoes Most people who become infected with disease? • Use repellents a mosquitoborne disease won’t have any People can get a mosquitoborne - Use DEET-based repellents (up Wdisease when they are bitten by a mosquito symptoms at all or just a mild illness. Symptoms to 30%) on skin or clothing that is infected with a disease agent. In usually show up suddenly within 1-2 weeks of Minnesota, there are about fifty different being bitten by an infected mosquito. A small types of mosquitoes. Only a few species are percentage of people will develop serious nervous system illness such as encephalitis Look for this label capable of spreading disease to humans. For on your repellent example, Culex tarsalis is the main mosquito or meningitis (inflammation of the brain or to know how long that spreads West Nile virus to Minnesotans. surrounding tissues). Watch for symptoms like: it will work.
    [Show full text]
  • Orthobunyaviruses: from Virus Binding to Penetration Into Mammalian Host Cells
    viruses Review Orthobunyaviruses: From Virus Binding to Penetration into Mammalian Host Cells Stefan Windhaber 1 , Qilin Xin 2 and Pierre-Yves Lozach 1,2,* 1 CellNetworks—Cluster of Excellence and Center for Integrative Infectious Diseases Research (CIID), Department of Infectious Diseases, Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany; [email protected] 2 Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Ecole Pratique des Hautes Etudes (EPHE), Viral Infections and Comparative Pathology (IVPC), UMR754-University Lyon, 69007 Lyon, France; [email protected] * Correspondence: [email protected] Abstract: With over 80 members worldwide, Orthobunyavirus is the largest genus in the Peribunyaviri- dae family. Orthobunyaviruses (OBVs) are arthropod-borne viruses that are structurally simple, with a trisegmented, negative-sense RNA genome and only four structural proteins. OBVs are potential agents of emerging and re-emerging diseases and overall represent a global threat to both public and veterinary health. The focus of this review is on the very first steps of OBV infection in mammalian hosts, from virus binding to penetration and release of the viral genome into the cytosol. Here, we address the most current knowledge and advances regarding OBV receptors, endocytosis, and fusion. Keywords: arbovirus; Bunyamwera; cell entry; emerging virus; endocytosis; fusion; La Crosse; Oropouche; receptor; Schmallenberg Citation: Windhaber, S.; Xin, Q.; Lozach, P.-Y. Orthobunyaviruses: 1. Introduction From Virus Binding to Penetration into Mammalian Host Cells. Viruses Orthobunyavirus consists of over 80 members that are globally distributed, which is a 2021, 13, 872. https://doi.org/ genus of the family Peribunyaviridae (Bunyavirales order) along with Herbevirus, Pacuvirus, 10.3390/v13050872 and Shangavirus (Table1)[ 1].
    [Show full text]
  • Habitat Preferences and Phenology of Ochlerotatus Triseriatus and Aedes Albopictus (Diptera: Culicidae) in Southwestern Virginia
    POPULATION AND COMMUNITY ECOLOGY Habitat Preferences and Phenology of Ochlerotatus triseriatus and Aedes albopictus (Diptera: Culicidae) in Southwestern Virginia 1 2 3 C. M. BARKER, S. L. PAULSON, S. CANTRELL, AND B. S. DAVIS Department of Entomology, Virginia Polytechnic Institute and State University, 216 Price Hall, Blacksburg, VA 24061Ð0319 J. Med. Entomol. 40(4): 403Ð410 (2003) ABSTRACT Recently, the number of reported human cases of La Crosse encephalitis, an illness caused by mosquito-borne La Crosse virus (LAC), has increased in southwestern Virginia, resulting in a need for better understanding of the virus cycle and the biology of its vectors in the region. This study examined the spatial and temporal distributions of the primary vector of LAC, Ochlerotatus triseriatus (Say), and a potential secondary vector, Aedes albopictus (Skuse). Ovitrapping surveys were Downloaded from conducted in 1998 and 1999 to determine distributions and oviposition habitat preferences of the two species in southwestern Virginia. Mosquitoes also were collected for virus assay from a tire dump and a human La Crosse encephalitis case site between 1998 and 2000. Oc. triseriatus and Ae. albopictus were collected from all ovitrap sites surveyed, and numbers of Oc. triseriatus eggs generally were higher than those of Ae. albopictus. Numbers of Oc. triseriatus remained high during most of the summer, while Ae. albopictus numbers increased gradually, reaching a peak in late August and declining thereafter. http://jme.oxfordjournals.org/ In Wise County, relative Ae. albopictus abundance was highest in sites with traps placed in open residential areas. Lowest numbers of both species were found in densely forested areas.
    [Show full text]
  • California Encephalitis, Hantavirus Pulmonary Syndrome, Hantavirus Hemorrhagic Fever with Renal 166 Syndrome, and Bunyavirus Hemorrhagic Fevers Raphael Dolin
    i. Bunyaviridae California Encephalitis, Hantavirus Pulmonary Syndrome, Hantavirus Hemorrhagic Fever With Renal 166 Syndrome, and Bunyavirus Hemorrhagic Fevers Raphael Dolin SHORT VIEW SUMMARY Definition Major Causes of Human Diseases Diagnostic tests are typically performed in } Bunyavirales is a large order of RNA viruses (See Table 166.1) reference laboratories. consisting of 10 families and more than 350 } California encephalitis group: Therapy named species. They are enveloped, } La Crosse virus (LACV) } Treatment is primarily supportive because specific single-stranded RNA viruses with a segmented Jamestown Canyon virus (JCV) } antiviral therapy is not available. Ribavirin has genome. Bunyavirales members can be found Rift Valley fever virus (RVFV) } been studied in some bunyavirus infections, and worldwide and are able to infect invertebrates, Crimean-Congo hemorrhagic fever virus (CCHFV) } data from in vitro and in vivo models hold vertebrates, and plants. Hantaviruses } promise. Ribavirin has shown clinical benefit in Hemorrhagic fever with renal syndrome Epidemiology } HFRS and in CCHF. However, comprehensive (HFRS) } Bunyaviruses are significant human pathogens clinical trials have not been conducted. } Hantavirus pulmonary syndrome with the ability to cause severe disease, } Severe fever with thrombocytopenia syndrome Prevention ranging from febrile illness, encephalitis, and virus (SFTSV) } No specific preventive measures are available, hepatitis to hemorrhagic fever. but experimental vaccines for some With exception of hantaviruses,
    [Show full text]