22% isnât a huge proportion, but youâre right thatâs fully vaccinated.
Sorry Iâd read it a bit quickly.
You are correct those with a single dose (after a few weeks) are very unlikely to die from COVID-19, most wonât get very sick, and although theyâre less likely to spread SARS-CoV-2, even with both doses some of them will spread it.
The vaccine trials showed reduction in severe disease (being on a respirator in ICU), but ~10% - ~20% of participants still got COVID-19. That rate is a very good, but not 100%.
Those numbers were against the original strain of SARS-CoV-2 (first seen in Wuhan), unfortunately the world now has some bad variants for which the current vaccines donât work that well (the Kent/UK strain is slightly worse, but a few others like the ones first found in South Africa, and especially Brazil, are much worse, with significant risk of âvaccine escapeâ, persisting despite vaccinations).
Itâs why getting everyone vaccinated ASAP is so important; the larger the populations with COVID-19 spreading, the more chance for worse strains to develop and take over.
Reports suggest the UK & Brazil strains may be behind Chileâs recent increase in COVID-19 infections.
Unfortunately we may need new vaccines/boosters that target the more aggressive strains before we can really get the disease to die off, especially if people get complacent before the virus is eliminated in their population.
Before that, physical distancing, quarantine, masks, good ventilation, hand washing, & working from home are all still very important.