The COVID-19 pandemic caused the largest sustained backslide in childhood immunization in three decades. Consequently, increasingly refers to catch-up and recovery campaigns . Key characteristics include:
It creates two new "kinds" of events: one for individual reviews (kind 2020) and another for "Review Sets" (kind 32020). nip activity new
Concise/Status: "Status: NIP activity — New. Awaiting processing." The COVID-19 pandemic caused the largest sustained backslide
