Rob Wiblin

Yeah, there are other factors that you had to think about, about whether that would work in your specific context.

Yeah.

This is a bit of a demanding question to know off the top of your head, but maybe to give listeners a sense of kind of the funnel here.

If you were to spend an extra $1,000 scaling up the program, how many SMS messages might you be able to send?

And maybe how many parents would you be able to hassle through this gossip mechanism?

Okay, so something like $20 per additional child immunized or reaching the full immunization schedule.

And is it possible to give a rough approximation of how many lives that will save or how many children you have to get extra vaccinations in order to save a life?

Yeah, the numbers are always changing.

We'll stick up a link to some of the GiveWell resources.

I guess the back of the envelope way that I would estimate this is you've got these numbers, I guess, from the World Bank or the World Health Organization of how many kids in India are not being fully vaccinated.

And then also estimates of how many children in India are dying of vaccination-preventable diseases.

And maybe you could say, well, you just look at the ratio there and you say, well, if there's 10 million children that are going through each cohort, not fully vaccinated, and then, you know, 100,000 of them are dying, then you'd say, well, it's one in 100.

So it's 100 to one ratio.

So if you could vaccinate 100 extra children, you might save one life.

Is that like non-idiotic way of doing it?

Yeah, that makes sense.

You're still kind of improving and developing and like reducing your per child reach costs.

So yeah, you hope to kind of increase that cost effectiveness over time.

And I guess, yeah, the people who get in early help to fund that development of the product, basically, and yeah, could maybe have a bigger contribution.

So SMS reminders is pretty intuitive.