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Beware the Bug that Bites You: Local Transmission of Malaria in Loudoun County Virginia. Benita L. Boyer, RN, MS, CIC District Epidemiologist, Loudoun Health District Leesburg, Virginia. November 4, 2003. David Goodfriend & ALL Loudoun County Health Department employees
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Benita L. Boyer, RN, MS, CIC
District Epidemiologist,
Loudoun Health District
Leesburg, Virginia
November 4, 2003
Loudoun Healthcare, Inc.
Mobile Health Van, Lab, Linda Belmonte (ICP)
Loudoun County Government Services
Fairfax County Health Department
Gloria Addo-Ayensu, Happy Callaway
Infectious Disease Physicians
Antonio Pastor, Henry Rhee
Clarke Environmental Mosquito Management
DCLS
Dee Pettit, Mary Mismas, Kelly Felkey
VDH Office of Epidemiology
John Marr, David Gaines, Diane Woolard, Suzanne Jenkins, Denise Sockwell
Hospitals B & C - ICPs
Maryland Department of Health and Mental Hygiene
Lynn Frank
Montgomery County (MD) Health Department
Tina Lacey, Yvonne Richards, Carol Garvey
Uniformed Services University of Health Sciences
CDC Malaria Branch
Louise Causer, John MacArthur, Robert Wirtz, Richard Steketee
Medical Analysis Systems, Inc.
Kirti Davé
AcknowledgementsNew World species
Zucker. EID. vol 2, no 1, 1996
Mosquitoes of North America by Stanley Carpenter and Walter LaCasse Virginia Mosquito Control Association
CDC
4-day history of fatigue, fevers, chills, myalgias, sinus pain
2 weeks of headaches, 4-day history of fever, nausea, vomiting, malaise, nose bleeds
Usually 10 -16 days after infection
Episodic high fever
recurs every 2-3 days
Shaking chills
Sweating
Headaches, muscle aches, malaise
Nausea, vomiting
Anemia and jaundice
May take up to one year to present
Case Symptoms:
4 to 205 days before presentation
Fatigue
Episodic fever
Chills
Headaches, muscle aches, malaise
Nausea, vomiting
Tachycardia
Anemia and jaundice
Sinus pain
Comparison of SymptomsMontgomery County
Selden Island
Residents were educated about the signs and symptoms of malaria by health department staff…
…through community town hall meetings and house-to-house instructions prior to adult mosquito spraying.
Clarke Mosquito
Selden Island
Montgomery County
Potomac River
Lansdowne is about 6 miles west of Sugarland Run
Medical Analysis Systems, Inc.
Montgomery County
Selden Island
Potomac River
Both mosquito pools were trapped within ¼ mile of Montgomery County, Maryland.
Montgomery County
Selden Island
Potomac River
Two mosquito pools on Selden Island tested positive for malaria by PCR, as did one pool on VanDeventer Island
with P. vivax abroad spent sufficient time on or near Selden Island to infect the local mosquito population