TICK-BORNE DISEASE Presented By Karl Neidhardt. Tick Species and Life Stages Most Likely to Bite Humans in the Eastern U.S. and the Diseases They May.

TICK-BORNE DISEASE

Presented By Karl Neidhardt

Tick Species and Life Stages Most Likely to Bite Humans in the Eastern U.S. and the Diseases They May Cause

Anaplasma phagocytophilum

ZOONOTIC CYCLE

COMMON TICK VECTORS

Borrelia burgdorferi

Agent of Lyme Disease

Ixodes scapularis Blacklegged Tick

What are the symptoms of Lyme Disease?

An EM rash is the most definitive sign.

Early stages produce flu like symptoms.

Later symptoms include problems with the muscles and joints, brain and nervous system, heart and circulation, digestion, reproductive system and skin.

ERYTHEMA MIGRANS

ERYTHEMA MIGRANS Secondary Rash

LYMEARTHRITIS

Neurological Manifestations

Bell’s Palsy

Domestic Animals

Dog with Lyme Arthritis

Cat with B. burgdorferi in eye

HorsesWild animals are asymptomatic

Check Pets For Ticks And UseRepellent(available from Vet.)

BABESIOSISBabesia microti

Vector: Ixodes scapularis

EHRLICHIOSIS

HGE - Human Granulocytic Ehrlichiosis

HGA - Human Granulocytic Anaplasmosis

HME - Human Monocytic Ehrlichiosis

Ehrlichia Life Cycle

AmblyommaamericanumLone Star Tick

LONE STAR TICK PROGRESSIVE ENGORGEMENT

Vector: American Dog Tick

RMSF - Rocky Mountain Spotted Fever Agent: Rickettsia rickettsii

RMSF RASH

Foot

Hand

Dermacentor variabilis American Dog Tick

1990-2000

TULAREMIA

American Dog Tick

Lone Star Tick

Ulcer

SPECIES COMPARISON

TICK RANGES

Lone Star Tick American Dog Tick

Blacklegged Tick

Peromyscus leucopis White footed Mouse Range (green), Hanta Cases (red)

Peromyscus maniculatus Deer Mouse

TICK HABITAT

SURVEILLANCE

Flagging

Study SiteStudy Site 0.5 kilometers

Three CO2 Traps per Sampling Site

Three CO2 Traps per Sampling Site

Sites in blue indicate Amblyomma americanum nymphs and/or adults positive for Ehrlichia chaffeensis shown over 90% population contours for nymphs and adults.

1999 20012001

33

n =1295, tested = 1295 n = 187, tested = 187

20002000

66

22

20002000

n = 1068, tested = 1068

Ft AP Hill Jamboree Area

Threat Map

Probability of Encountering

Lone Star Ticks

Red = Higher

Yellow = Lower

Green = Unlikely

PERSONAL PROTECTION

Wear light colored clothing.

Blouse pants inside socks.

PERSONAL PROTECTION

Buddy Checks

Prompt Tick Removal

Repellents

DoD Repellent System

Stop complaining Billy, It’s either this, the suit or hose.

CONTROL

Brush Removal

Targeted Backpack Spraying

Prescription Burns

ALTERNATIVE CONTROL STRATEGIES

DEER FEEDING STATIONFeeding corn treated with Doramectin for Systemic Tick Control

4-POSTER Deer Treatment Bait StationMarket Rep: American Lyme Disease Foundatione-mail: [email protected]

Supplier: CR Danials Inc. Ellicott City, MDContact: Andy Szulinski, 1-800-933-2638, ext 2481e-mail: [email protected]

Pesticide: Y-TEX, 4-Poster Tickicide, 10.0% permethrin

QUESTIONS

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Karl Neidhardt, USCHPPM-North, ESD4411 Llewellyn, Ft Meade, MD 20755-5225E-mail: [email protected]