The GiveWell Blog

September 2022 open thread

Our goal with hosting quarterly open threads is to give blog readers an opportunity to publicly raise comments or questions about GiveWell or related topics (in the comments section below). As always, you’re also welcome to email us at or to request a call with GiveWell staff if you have feedback or questions you’d prefer to discuss privately. We’ll try to respond promptly to questions or comments.

You can view previous open threads here.


  • I am really happy with your blog because your article is very unique and powerful for new.

  • My question is about giving in the malaria prevention space. I’ve read some about RTS,S and R21 vaccines and it seems like 2023 and 2024 might see some really big changes, hopefully improvements in malaria impact.
    Obviously until R21 vaccine is proven chemoprevention and nets are the best solutions. Is GiveWell already planning on how to reassess giving for malaria prevention if vaccines prove out and are mass adopted?

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