I am going to try to answer some of your questions :D Sentence A = What was needed was a more coordinated global effort not just to battle the virus, but also to look for emerging variants Sentence B1 = As my colleague Alice Park reports Sentence B2 = in 2021, Abbott, the global health care company, developed just that, establishing the APDC. 1) the first coma separates B1 from B2. I am not sure why there is a coma after <in 2021> but it does sound natural to add a pause in there. I think the coma after <in 2021> can be omitted. 2)that indicates <emerging variants>. Emerging variants is the topic of sentence A. Emerging variants is <what was needed> 3) there is nothing omitted here. another way to say the same sentence is: Sentence B1, in 2021, Abbott developed just that and in doing so Abbott established the APDC 4) coordinated = organized; global=international; effort = 노력 5)as= Like my colleague reports; or as = What my colleague reports is... or as = The thing that my colleague reports: 6) developed just that = developed a way not just to battle the virus, but also to look for emerging variants.