[3] Andrus is the director, Division of Vaccines and Immunizations, is adjoint professor of family medicine and pediatrics, Section of Pediatric Infectious Disease, School of Medicine and adjunct professor of Epidemiology at the Colorado School of Public Health, University of Colorado Anschutz Medical Campus.
[4] Based at the center's Washington, D.C., office, Andrus leads the University of Colorado's efforts to advocate for the evidence-based use of life-saving vaccines in the world's poorest communities.
[5] At PAHO, among several duties, he oversaw departments of Emergency Preparedness and Disaster Relief; and Knowledge Management and Communication.
Andrus has published more than 120 scientific peer-reviewed papers on topics covering disease eradication, the introduction of new vaccines and primary care.
The ministries of health of El Salvador, Ecuador, Paraguay, and Peru have awarded Andrus for his contributions to immunization services in countries of Latin America.