If you’re vaccinated against COVID-19, you may still get infected — but the odds you’ll need hospitalization are reduced by about two-thirds compared to unvaccinated people, a new study reveals.
Vaccination also greatly increases the chances that COVID-19 infection will be asymptomatic and halves the risk of long-haul symptoms — those lasting 28 days or more, researchers report in The Lancet Infectious Diseases journal.
“We are at a critical point in the pandemic as we see cases rising worldwide due to the Delta variant. Breakthrough infections are expected and don’t diminish the fact that these vaccines are doing exactly what they were designed to do — save lives and prevent serious illness,” co-author Claire Steves, of King’s College London says.
“Other research has shown a mortality rate as high as 27% for hospitalized COVID-19 patients. We can greatly reduce that number by keeping people out of the hospital in the first place through vaccination,” Steves says.
READ: COVID-19 Vaccines Boost Antibodies, Even in People With Weak Immune Systems
Relying on the UK COVID Symptom Study, researchers analyzed self-reported data provided from Dec. 8, 2020, through July 4, 2021.
Of the more than 1.2 million adults who received at least one dose of either the Pfizer, Moderna or AstraZeneca vaccines, fewer than 0.5% reported a breakthrough infection more than 14 days after their first dose.
Among the more than 971,000 adults who received two vaccine doses, fewer than 0.2% had a breakthrough infection more than seven days after their second dose, the researchers say.
And for those who did test positive for COVID-19, odds were high that they were symptom-free. The chances of the infection being asymptomatic rose