Turabian, Jose Luis. “Risk Factors and Incidence Rates of COVID-19 Breakthrough Infections in Vaccinated People With Vaccine Booster in General Medicine, Toledo (Spain), for the Period December 2021 to February 2022”. Archives of Community Medicine and Public Health 8, no. 2 (June 25, 2022): 084–091. Accessed September 28, 2025. https://www.healthdisgroup.com/acmph/article/view/ACMPH-8-279.