Bill Gates Grab on Polio Eradication

The transcript outlines a plan to reduce cases to zero, requiring two years of vaccination to ensure no cases are missed. The full certification process is expected to take six years, with annual progress visible. The plan includes funding, new technologies, and measurements, all being coordinated currently.

What does the speaker expect to see each year regarding case numbers?

In what context does the speaker mention 'very, very tough areas'?