"Breakthrough case" nghĩa là gì?

"Breakthrough case" = ca nhiễm đột biến -> nghĩa là vẫn bị bệnh/bị nhiễm dù đã được tiêm vắc-xin.

Ví dụ

Vaccinated people who have a breakthrough case of Omicron will have better protection against COVID-19 variants than vaccinated people who receive a booster (tăng cường) shot, two new studies show.

Therefore, the DOH advises that everyone age 6 months and up get a vaccine as soon as possible if they have not done so. Even if someone gets a breakthrough case of the flu (cúm) after getting the vaccine, it is still usually a milder (nhẹ hơn) case as a result and lowers the chance of needing medical care, the release states.

We reported last year that, based on CDC data, the chances of getting a breakthrough case were astronomically (vô cùng to lớn) low — in May 2021, the number of cases made up 0.01% of fully vaccinated people. In September 2021, data and health experts showed that the odds of catching a breakthrough case of COVID-19 was about 1 in 35,000 per day.

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