Details:

Alternative Title:
Am J Trop Med Hyg
Personal Author:
Savage, Harry M. ; Godsey, Marvin S. ; Lambert, Amy ; Panella, Nicholas A. ; Burkhalter, Kristen L. ; ... More +
Savage, Harry M. ; Godsey, Marvin S. ; Lambert, Amy ; Panella, Nicholas A. ; Burkhalter, Kristen L. ; Harmon, Jessica R. ; Lash, R. Ryan ; Ashley, David C. ; Nicholson, William L. Less -
Description:
Heartland virus (HRTV), the first pathogenic Phlebovirus (Family: Bunyaviridae) discovered in the United States, was recently described from two Missouri farmers. In 2012, we collected 56,428 ticks representing three species at 12 sites including both patients' farms. Amblyomma americanum and Dermacentor variabilis accounted for nearly all ticks collected. Ten pools composed of deplete nymphs of A. americanum collected at a patient farm and a nearby conservation area were reverse transcription-polymerase chain reaction positive, and eight pools yielded viable viruses. Sequence data from the nonstructural protein of the Small segment indicates that tick strains and human strains are very similar, ≥ 97.6% sequence identity. This is the first study to isolate HRTV from field-collected arthropods and to implicate ticks as potential vectors. Amblyomma americanum likely becomes infected by feeding on viremic hosts during the larval stage, and transmission to humans occurs during the spring and early summer when nymphs are abundant and actively host seeking.
Subjects:
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Animals Arachnid Vectors Articles Dermacentor Humans Ixodidae Missouri Nymph Phlebovirus Phylogeny Reverse Transcriptase Polymerase Chain Reaction RNA, Viral Sequence Analysis, DNA
Source:
Am J Trop Med Hyg. 2013; 89(3):445-452.
Document Type:
Journal Article
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:056e8ad0d2e38170d011194b8ffc5ffb81c2518df1bc47f09007c7feaa8087be
Download URL:
https://stacks.cdc.gov/view/cdc/21149/cdc_21149_DS1.pdf
File Type:

Supporting Files

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