About the Authors

Olaf Horstick

Affiliation Institute of Public Health, University of Heidelberg, Heidelberg, Germany

Amy C. Morrison


The views expressed in this article are those of the author and do not necessarily reflect the official policy or position of the Department of the Navy, Department of Defense, nor the US Government.

Affiliations Department of Entomology, University of California, Davis, Davis, California, United States of America, Naval Medical Research Unit No. 6, Washington, D.C., United States of America

Competing Interests

The authors have declared that no competing interests exist.