COVID-19 still found a way into a fully vaccinated crowd. Will Omicron make 'breakthrough infections' worse?

In September, the CDC estimated unvaccinated people were nearly six times more likely to become infected with COVID-19 and 14 times more likely to die from it. 

"Breakthrough infections are increasing all over the world where you have more vaccination and you have high transmission, particularly of the Delta virus," said Robert Bollinger, a professor of infectious diseases at Johns Hopkins University.

"Those who get significantly ill from breakthrough infections, those who are hospitalised and unfortunately die, they tend to be people who are older, people that are immunocompromised, people that have multiple other comorbidity health conditions." 

Still, Dr Bollinger said the chances of dying from COVID-19 while vaccinated are extremely small.