The Perfect Enemy | Author: Julio Marchi | Page 1430
July 16, 2025

Julio Marchi

Technology Scientist, Executive, and Entrepreneur. Specialized in Internet Products Development, Digital Security, and IT Coaching. System Engineer by degree, Musician and Writer by passion. Journalist and Magazines Publisher in a previous life (getting back to it now). Currently hosting the "Julio Marchi Speaks Out Show" on YouTube.

Seroprevalence of Infection-Induced SARS-CoV-2 Antibodies — United States, September 2021–February 2022 | MMWR – Centers for Disease Control and Prevention (.gov)

In December 2021, the B.1.1.529 (Omicron) variant of SARS-CoV-2, the virus that causes COVID-19, became predominant in the United States....