Full Title: Guidelines for Aedes aegypti and Aedes albopictus Surveillance and Insecticide Resistance Testing in the United States Intended Audience: These surveillance guidelines were developed for local, state, and territorial health departments and cities in the United States receiving Epidemiology and Laboratory Capacity cooperative agreement funding. Surveillance Aims To improve knowledge of the distribution and local abundance of Ae. aegypti and Ae. albopictus in the United States.To produce and publically post regularly updated mosquito distribution maps.This information should be used to guide vector surveillance and control activities targeting Ae. aegypti- and Ae. albopictus-borne arboviral diseases in the continental United States. Testing Aims To better enable local, state, and national programs to effectively respond to epidemics of Zika, chikungunya, and dengue viruses through control of Ae. aegypti and Ae. albopictus. An additional aim is to improve our knowledge of evolving geographical patterns of insecticide resistance and devise programs for managing it. Table of Contents Part 1: Guidelines for Conducting Surveillance and for Reporting Presence, Absence, and Relative Abundance of Aedes aegypti and Aedes albopictus Background Surveillance Aims CDC Surveillance Recommendations Reporting to CDC CDC Use of Reported Data References Part 2: Insecticide Resistance Testing for known Mosquito Vectors of Zika, Dengue, and Chikungunya Viruses Background Testing Aims CDC Testing Recommendations Reporting to CDC CDC Use of Reported Data Addendum 1: Overview of Insecticide Resistance Testing Algorithm Addendum 2: Extended Background on Insecticide Resistance References