Health, fitness and Food
Revealed: The groups who are most likely to catch COVID after being vaccinated
Young people, healthcare workers and non-white people are among those who are most likely to test positive for COVID after being vaccinated, a new study has found.
Analysis by the Office for National Statistics (ONS) found the chance of getting coronavirus after being vaccinated drops sharply 21 days following a first dose.
Just 0.5% of people who had received one dose tested positive for COVID. After two doses this number dropped to 0.07%.
The chart below shows the rate of infection falling after having a vaccine.
For the people who did test positive after vaccination, the study found they were less likely to have a high viral load or develop symptoms.
The ONS study used a ‘hazard ratio’ to compare the risk of a COVID infection occurring in two different groups at a given time. Someone with a high hazard ratio is more likely to see the hazard happen to them.
These are the factors that influence how likely a person is to test positive after being vaccinated:
The study found age was the biggest factor for a person’s chances of getting infected with COVID after vaccination, with the younger people more likely to get infected.
People aged 20 more than twice as likely to catch COVID than people aged 80 after being vaccinated.
The larger a person’s household, the higher their chance of testing positive after vaccination.
The study found people living in a household of one had a hazard ratio of 1, which steadily increased to 1.49 for people living in households of five or more people.
The study found non-white people were more likely to catch COVID than white people.
White people had a hazard ratio of 1 while non-white people had a hazard ratio of 1.18.
The ONS found gender did not play much of a role in the likelihood of catching COVID after getting vaccinated with only a 0.03 difference between males and females.