以色列研究表明,自然免疫提供的保护是 COVID 疫苗的 13 倍, CDC说疫苗比自然免疫提供的保护更强, 所以疫苗+自然免疫
Israeli study shows natural immunity delivers 13 times more protection than COVID vaccines
https://www.clarkcountytoday.com/news/israeli-study-shows-natural-immunity-delivers-13-times-more-protection-than-covid-vaccines/