1. Centers for Disease Control and Prevention, Asthma and Community Health Branch, National Center for Environmental Health, Atlanta, GA, USA;
2. Centers for Disease Control and Prevention, Epidemic Intelligence Service, Atlanta, GA, USA;
3. Centers for Disease Control and Prevention, Lead Poisoning Prevention and Environmental Health Tracking Branch, National Center for Environmental Health, Atlanta, GA, USA;
4. Puerto Rico Department of Health, Auxiliary Secretariat of Planning and Development, San Juan, Puerto Rico, USA;
5. Puerto Rico Department of Health, Office of Epidemiology and Investigation, San Juan, Puerto Rico, USA;
6. Puerto Rico Department of Health, Puerto Rico Asthma Program, Division for the Prevention and Control of Chronic Diseases, San Juan, Puerto Rico, USA;
7. Centers for Disease Control and Prevention, Dengue Branch, National Center for Emerging and Zoonotic Infectious Diseases, Atlanta, GA, USA;
8. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA;
9. Department of Microbiology, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico, USA