> Would you subjectively describe that number as "almost zero"?
Sure. If the only effect were on under-30s, this wouldn’t be a great vaccine. What 5,000 people is good for, however, is confidently measuring decline in a cohort. Zero deaths, even against a baseline of tens, strongly implies this should cross into the tend or hundreds of thousands over the next decades in populations that keep vaccination rates up.
Looking at healthcare stuff globally is misleading because of Africa. The ongoing HIV/AIDS epidemic there makes death rates for anything that HIV/AIDS can contribute to highly malinformative. For instance in southern Africa, more than 60% of women with cervical cancer also have HIV. [1]
Oddly enough I can't find exact death rates from cervical cancer paired amongst those who had HIV/AIDS but this [2] hints at it, with 90% of all cervical cancer deaths coming in low/middle income countries, and with the "highest burden" (plurality I guess?) coming from sub-Saharan Africa where rates of HIV are the highest. [2]
[1] - https://pmc.ncbi.nlm.nih.gov/articles/PMC7815633/
[2] - hhttps://www.unaids.org/en/resources/presscentre/featurestori...