COVID-19 Contact Tracing Strategies During the First Wave of the Pandemic: Systematic Review of Published Studies

Anna Maria Vincenza Amicosante   ^{1 *} , MSc, PhD ;   Annalisa Rosso   ^{1, 2 *} , MSc, MD, PhD ;   Fabio Bernardini   ¹ , MA ;   Elisa Guglielmi   ¹ , MA ;   Erica Eugeni   ¹ , MA, PhD ;   Filippo Da Re   ³ , MA, MSc ;   Giovanni Baglio   ¹ , MSc, MD

¹ Research and International Relations Unit, Italian National Agency for Regional Healthcare Services, Rome, Italy

² Department of Environmental and Prevention Sciences, University of Ferrara, Ferrara, Italy

³ Regional Directorate of Prevention, Food Safety, Veterinary, Public Health-Veneto Region, Venice, Italy

*these authors contributed equally